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-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- How many heads of the departments are older than 56 ?
| SELECT count(*) FROM head WHERE age > 56; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- List the name, born state and age of the heads of departments ordered by age.
| SELECT name , born_state , age FROM head ORDER BY age; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- List the creation year, name and budget of each department.
| SELECT creation , name , budget_in_billions FROM department; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What are the maximum and minimum budget of the departments?
| SELECT max(budget_in_billions) , min(budget_in_billions) FROM department; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What is the average number of employees of the departments whose rank is between 10 and 15?
| SELECT avg(num_employees) FROM department WHERE ranking BETWEEN 10 AND 15; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What are the names of the heads who are born outside the California state?
| SELECT name FROM head WHERE born_state != 'California'; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What are the distinct creation years of the departments managed by a secretary born in state 'Alabama'?
| SELECT DISTINCT T1.creation FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T3.born_state = 'Alabama'; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What are the names of the states where at least 3 heads were born?
| SELECT born_state FROM head GROUP BY born_state HAVING count(*) >= 3; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- In which year were most departments established?
| SELECT creation FROM department GROUP BY creation ORDER BY count(*) DESC LIMIT 1; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- Show the name and number of employees for the departments managed by heads whose temporary acting value is 'Yes'?
| SELECT T1.name , T1.num_employees FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id WHERE T2.temporary_acting = 'Yes'; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- How many acting statuses are there?
| SELECT count(DISTINCT temporary_acting) FROM management; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- How many departments are led by heads who are not mentioned?
| SELECT count(*) FROM department WHERE department_id NOT IN (SELECT department_id FROM management); |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- What are the distinct ages of the heads who are acting?
| SELECT DISTINCT T1.age FROM management AS T2 JOIN head AS T1 ON T1.head_id = T2.head_id WHERE T2.temporary_acting = 'Yes'; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- List the states where both the secretary of 'Treasury' department and the secretary of 'Homeland Security' were born.
| SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T1.name = 'Treasury' INTERSECT SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T1.name = 'Homeland Security'; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- Which department has more than 1 head at a time? List the id, name and the number of heads.
| SELECT T1.department_id , T1.name , count(*) FROM management AS T2 JOIN department AS T1 ON T1.department_id = T2.department_id GROUP BY T1.department_id HAVING count(*) > 1; |
-- Database schema
| department : Department_ID [ INT ] primary_key , Name [ TEXT ] , Creation [ TEXT ] , Ranking [ INT ] , Budget_in_Billions [ INT ] , Num_Employees [ INT ] | head : head_ID [ INT ] primary_key , name [ TEXT ] , born_state [ TEXT ] , age [ INT ] | management : department_ID [ INT ] primary_key management.department_ID = department.Department_ID , head_ID [ INT ] management.head_ID = head.head_ID , temporary_acting [ TEXT ] |
-- -- Which head's name has the substring 'Ha'? List the id and name.
| SELECT head_id , name FROM head WHERE name LIKE '%Ha%'; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- How many farms are there?
| SELECT count(*) FROM farm; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Count the number of farms.
| SELECT count(*) FROM farm; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- List the total number of horses on farms in ascending order.
| SELECT Total_Horses FROM farm ORDER BY Total_Horses ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What is the total horses record for each farm, sorted ascending?
| SELECT Total_Horses FROM farm ORDER BY Total_Horses ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the hosts of competitions whose theme is not "Aliens"?
| SELECT Hosts FROM farm_competition WHERE Theme != 'Aliens'; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Return the hosts of competitions for which the theme is not Aliens?
| SELECT Hosts FROM farm_competition WHERE Theme != 'Aliens'; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the themes of farm competitions sorted by year in ascending order?
| SELECT Theme FROM farm_competition ORDER BY YEAR ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Return the themes of farm competitions, sorted by year ascending.
| SELECT Theme FROM farm_competition ORDER BY YEAR ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What is the average number of working horses of farms with more than 5000 total number of horses?
| SELECT avg(Working_Horses) FROM farm WHERE Total_Horses > 5000; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Give the average number of working horses on farms with more than 5000 total horses.
| SELECT avg(Working_Horses) FROM farm WHERE Total_Horses > 5000; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the maximum and minimum number of cows across all farms.
| SELECT max(Cows) , min(Cows) FROM farm; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Return the maximum and minimum number of cows across all farms.
| SELECT max(Cows) , min(Cows) FROM farm; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- How many different statuses do cities have?
| SELECT count(DISTINCT Status) FROM city; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Count the number of different statuses.
| SELECT count(DISTINCT Status) FROM city; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- List official names of cities in descending order of population.
| SELECT Official_Name FROM city ORDER BY Population DESC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the official names of cities, ordered descending by population?
| SELECT Official_Name FROM city ORDER BY Population DESC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- List the official name and status of the city with the largest population.
| SELECT Official_Name , Status FROM city ORDER BY Population DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What is the official name and status of the city with the most residents?
| SELECT Official_Name , Status FROM city ORDER BY Population DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Show the years and the official names of the host cities of competitions.
| SELECT T2.Year , T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Give the years and official names of the cities of each competition.
| SELECT T2.Year , T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Show the official names of the cities that have hosted more than one competition.
| SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT(*) > 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the official names of cities that have hosted more than one competition?
| SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT(*) > 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Show the status of the city that has hosted the greatest number of competitions.
| SELECT T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY COUNT(*) DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What is the status of the city that has hosted the most competitions?
| SELECT T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY COUNT(*) DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Please show the themes of competitions with host cities having populations larger than 1000.
| SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the themes of competitions that have corresponding host cities with more than 1000 residents?
| SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Please show the different statuses of cities and the average population of cities with each status.
| SELECT Status , avg(Population) FROM city GROUP BY Status; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the statuses and average populations of each city?
| SELECT Status , avg(Population) FROM city GROUP BY Status; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Please show the different statuses, ordered by the number of cities that have each.
| SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Return the different statuses of cities, ascending by frequency.
| SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) ASC; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- List the most common type of Status across cities.
| SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What is the most common status across all cities?
| SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) DESC LIMIT 1; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- List the official names of cities that have not held any competition.
| SELECT Official_Name FROM city WHERE City_ID NOT IN (SELECT Host_city_ID FROM farm_competition); |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the official names of cities that have not hosted a farm competition?
| SELECT Official_Name FROM city WHERE City_ID NOT IN (SELECT Host_city_ID FROM farm_competition); |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Show the status shared by cities with population bigger than 1500 and smaller than 500.
| SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Which statuses correspond to both cities that have a population over 1500 and cities that have a population lower than 500?
| SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Find the official names of cities with population bigger than 1500 or smaller than 500.
| SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the official names of cities that have population over 1500 or less than 500?
| SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- Show the census ranking of cities whose status are not "Village".
| SELECT Census_Ranking FROM city WHERE Status != "Village"; |
-- Database schema
| city : City_ID [ INT ] primary_key , Official_Name [ TEXT ] , Status [ TEXT ] , Area_km_2 [ INT ] , Population [ INT ] , Census_Ranking [ TEXT ] | farm : Farm_ID [ INT ] primary_key , Year [ INT ] , Total_Horses [ INT ] , Working_Horses [ INT ] , Total_Cattle [ INT ] , Oxen [ INT ] , Bulls [ INT ] , Cows [ INT ] , Pigs [ INT ] , Sheep_and_Goats [ INT ] | farm_competition : Competition_ID [ INT ] primary_key , Year [ INT ] , Theme [ TEXT ] , Host_city_ID [ INT ] farm_competition.Host_city_ID = city.City_ID , Hosts [ TEXT ] | competition_record : Competition_ID [ INT ] primary_key competition_record.Competition_ID = farm_competition.Competition_ID , Farm_ID [ INT ] competition_record.Farm_ID = farm.Farm_ID , Rank [ INT ] |
-- -- What are the census rankings of cities that do not have the status "Village"?
| SELECT Census_Ranking FROM city WHERE Status != "Village"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- which course has most number of registered students?
| SELECT T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY count(*) DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is the name of the course with the most registered students?
| SELECT T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY count(*) DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- what is id of students who registered some courses but the least number of courses in these students?
| SELECT student_id FROM student_course_registrations GROUP BY student_id ORDER BY count(*) LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of the students who registered for some courses but had the least number of courses for all students?
| SELECT student_id FROM student_course_registrations GROUP BY student_id ORDER BY count(*) LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- what are the first name and last name of all candidates?
| SELECT T2.first_name , T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the first and last names of all the candidates?
| SELECT T2.first_name , T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- List the id of students who never attends courses?
| SELECT student_id FROM students WHERE student_id NOT IN (SELECT student_id FROM student_course_attendance); |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of every student who has never attended a course?
| SELECT student_id FROM students WHERE student_id NOT IN (SELECT student_id FROM student_course_attendance); |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- List the id of students who attended some courses?
| SELECT student_id FROM student_course_attendance; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of all students who have attended at least one course?
| SELECT student_id FROM student_course_attendance; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of all students for courses and what are the names of those courses?
| SELECT T1.student_id , T2.course_name FROM student_course_registrations AS T1 JOIN courses AS T2 ON T1.course_id = T2.course_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is detail of the student who most recently registered course?
| SELECT T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY T1.registration_date DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What details do we have on the students who registered for courses most recently?
| SELECT T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY T1.registration_date DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- How many students attend course English?
| SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = "English"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- How many students are attending English courses?
| SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = "English"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- How many courses do the student whose id is 171 attend?
| SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- How many courses does the student with id 171 actually attend?
| SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find id of the candidate whose email is stanley.monahan@example.org?
| SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = "stanley.monahan@example.org"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is the id of the candidate whose email is stanley.monahan@example.org?
| SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = "stanley.monahan@example.org"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find id of the candidate who most recently accessed the course?
| SELECT candidate_id FROM candidate_assessments ORDER BY assessment_date DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is the id of the candidate who most recently accessed the course?
| SELECT candidate_id FROM candidate_assessments ORDER BY assessment_date DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is detail of the student who registered the most number of courses?
| SELECT T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the details of the student who registered for the most number of courses?
| SELECT T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- List the id of students who registered some courses and the number of their registered courses?
| SELECT T1.student_id , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- For every student who is registered for some course, how many courses are they registered for?
| SELECT T1.student_id , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- How many registed students do each course have? List course name and the number of their registered students?
| SELECT T3.course_name , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- For each course id, how many students are registered and what are the course names?
| SELECT T3.course_name , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find id of candidates whose assessment code is "Pass"?
| SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = "Pass"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of the candidates that have an outcome code of Pass?
| SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = "Pass"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find the cell mobile number of the candidates whose assessment code is "Fail"?
| SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = "Fail"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the cell phone numbers of the candidates that received an assessment code of "Fail"?
| SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = "Fail"; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the id of students who registered course 301?
| SELECT student_id FROM student_course_attendance WHERE course_id = 301; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of the students who registered for course 301?
| SELECT student_id FROM student_course_attendance WHERE course_id = 301; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What is the id of the student who most recently registered course 301?
| SELECT student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY date_of_attendance DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the ids of the students who registered for course 301 most recently?
| SELECT student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY date_of_attendance DESC LIMIT 1; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find distinct cities of addresses of people?
| SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the different cities where people live?
| SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- Find distinct cities of address of students?
| SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the different cities where students live?
| SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- List the names of courses in alphabetical order?
| SELECT course_name FROM courses ORDER BY course_name; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the names of the courses in alphabetical order?
| SELECT course_name FROM courses ORDER BY course_name; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- List the first names of people in alphabetical order?
| SELECT first_name FROM people ORDER BY first_name; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the first names of the people in alphabetical order?
| SELECT first_name FROM people ORDER BY first_name; |
-- Database schema
| Addresses : address_id [ INT ] primary_key , line_1 [ TEXT ] , line_2 [ TEXT ] , city [ TEXT ] , zip_postcode [ TEXT ] , state_province_county [ TEXT ] , country [ TEXT ] | People : person_id [ INT ] primary_key , first_name [ TEXT ] , middle_name [ TEXT ] , last_name [ TEXT ] , cell_mobile_number [ TEXT ] , email_address [ TEXT ] , login_name [ TEXT ] , password [ TEXT ] | Students : student_id [ INT ] primary_key Students.student_id = People.person_id , student_details [ TEXT ] | Courses : course_id [ TEXT ] primary_key , course_name [ TEXT ] , course_description [ TEXT ] , other_details [ TEXT ] | People_Addresses : person_address_id [ INT ] primary_key , person_id [ INT ] People_Addresses.person_id = People.person_id , address_id [ INT ] People_Addresses.address_id = Addresses.address_id , date_from [ TEXT ] , date_to [ TEXT ] | Student_Course_Registrations : student_id [ INT ] primary_key Student_Course_Registrations.student_id = Students.student_id , course_id [ INT ] Student_Course_Registrations.course_id = Courses.course_id , registration_date [ TEXT ] | Student_Course_Attendance : student_id [ INT ] primary_key Student_Course_Attendance.student_id = Student_Course_Registrations.student_id , course_id [ INT ] Student_Course_Attendance.course_id = Student_Course_Registrations.course_id , date_of_attendance [ TEXT ] | Candidates : candidate_id [ INT ] primary_key Candidates.candidate_id = People.person_id , candidate_details [ TEXT ] | Candidate_Assessments : candidate_id [ INT ] primary_key Candidate_Assessments.candidate_id = Candidates.candidate_id , qualification [ TEXT ] , assessment_date [ TEXT ] , asessment_outcome_code [ TEXT ] |
-- -- What are the id of students who registered courses or attended courses?
| SELECT student_id FROM student_course_registrations UNION SELECT student_id FROM student_course_attendance; |
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