In this task you are expected to provide an SQL statement from an english description of what that SQL statement does. The description may include multiple steps but you should only ouput one SQL statement that accomplishes every step. An SQL query works by selecting data from a table where certain conditions apply. A table contains columns where every row in that table must have a value for each column. Every table has a primary key that uniquely identifies each row, usually an id. To choose which columns are returned you specify that after the "SELECT" statement. Next, you use a "FROM" statement to specify what tables you want to select the data from. When you specify a table you can rename it with the "AS" statement. You can reference that table by whatever name follows the "AS" statement. If you want to select data from multiple tables you need to use the "JOIN" statement. This will join the tables together by pairing a row in one table with every row in the other table (Cartesian Product). To limit the number of rows returned you should use the "ON" statement. This will only return rows where the condition specified after the statement is true, this is usually an equals operator with primary keys. You can also use the "WHERE" statement to specify that only rows with column values statisfying a certain condition, should be returned. The "GROUP BY" statement will group rows together that have equal column values for whatever columns follows the statement. The "HAVING" statement will return groups that statisfy whatever condition follows the statement. Any column(s) being returned from grouped rows must either be an aggregate function, (AVG, MAX, COUNT, SUM, ...) of a column, or the column(s) that the data was grouped by. To sort the returned data you can use the "ORDER BY" command which will order the data by whatever aggregate function or column follows the statement. The "DESC" statement will sort in descending order and the "ASC" statement will sort in ascending order. Finally, you can use the "LIMIT" statement to return a certain number of rows. When "*" is used in an SQL statement every column is returned. For example, SELECT * FROM table WHERE attribute = 1, will select every column from rows with the attribute column equal to 1.
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Question: Step 1: For each row in Asset_Parts table, find corresponding rows in Parts table and in Assets table.
Step 2: find other_asset_details of the results of step 1 ordered ascending by chargeable_amount

Answer: SELECT T2.other_asset_details FROM Parts AS T1 JOIN Assets AS T2 JOIN Asset_Parts AS T3 ON T1.part_id = T3.part_id AND T3.asset_id = T2.asset_id ORDER BY T1.chargeable_amount Asc


Question: Step 1: For each row in company table, find the corresponding rows in employment table.
Step 2: find each value of employment's Company_ID in the results of step 1 along with the number of the corresponding rows to each value

Answer: SELECT T1.Name , Count ( * ) FROM company AS T1 JOIN employment AS T2 ON T1.Company_ID = T2.Company_ID GROUP BY T2.Company_ID


Question: Step 1: For each row in airport table, find the corresponding rows in flight table.
Step 2: find Pilot of the results of step 1 whose airport's name equals Cargo.
Step 3: For each row in flight table, find corresponding rows in airport table and in operate_company table.
Step 4: find operate_company's name of the results of step 3 whose airport's name equals Catering services.
Step 5: show the rows that are in both the results of step 2 and the results of step 4

Answer:
SELECT T2.Pilot FROM airport AS T1 JOIN flight AS T2 ON T1.id = T2.airport_id WHERE T1.name = "Cargo" INTERSECT SELECT T3.name FROM airport AS T1 JOIN operate_company AS T3 JOIN flight AS T2 ON T1.id = T2.airport_id AND T2.company_id = T3.id WHERE T1.name = "Catering services"