Database: cre_Drama_Workshop_Groups

Question: Show all cities along with the number of drama workshop groups in each city.
SQL: SELECT T1.City_Town ,  count(*) FROM Addresses AS T1 JOIN Drama_Workshop_Groups AS T2 ON T1.Address_ID  =  T2.Address_ID GROUP BY T1.City_Town

Question: What is the marketing region code that has the most drama workshop groups?
SQL: SELECT Marketing_Region_Code FROM Drama_Workshop_Groups GROUP BY Marketing_Region_Code ORDER BY count(*) DESC LIMIT 1

Question: Show all cities where at least one customer lives in but no performer lives in.
SQL: SELECT T1.City_Town FROM Addresses AS T1 JOIN Customers AS T2 ON T1.Address_ID  =  T2.Address_ID EXCEPT SELECT T1.City_Town FROM Addresses AS T1 JOIN Performers AS T2 ON T1.Address_ID  =  T2.Address_ID

Question: What is the most frequent status of bookings?
SQL: SELECT Status_Code FROM BOOKINGS GROUP BY Status_Code ORDER BY count(*) DESC LIMIT 1

Question: What are the names of the workshop groups that have bookings with status code "stop"?
SQL: SELECT T2.Store_Name FROM Bookings AS T1 JOIN Drama_Workshop_Groups AS T2 ON T1.Workshop_Group_ID  =  T2.Workshop_Group_ID WHERE T1.Status_Code  =  "stop"

Question: Show the names of all the clients with no booking.
SQL: SELECT Customer_Name FROM Clients EXCEPT SELECT T2.Customer_Name FROM Bookings AS T1 JOIN Clients AS T2 ON T1.Customer_ID  =  T2.Client_ID

Question: What is the average quantities ordered with payment method code "MasterCard" on invoices?
SQL: SELECT avg(Order_Quantity) FROM Invoices WHERE payment_method_code  =  "MasterCard"

Question: What is the product ID of the most frequently ordered item on invoices?
SQL: SELECT Product_ID FROM INVOICES GROUP BY Product_ID ORDER BY COUNT(*) DESC LIMIT 1