Task: Text to Code
Input (English): Step 1: For each row in Services table, find corresponding rows in Ref_Service_Types table and in Drama_Workshop_Groups table.
Step 2: find the number of different Currency_Code in the results of step 1 whose Parent_Service_Type_Code equals 1
Output (English): SELECT Count ( DISTINCT T2.Currency_Code ) FROM Ref_Service_Types AS T1 JOIN Drama_Workshop_Groups AS T2 JOIN Services AS T3 ON T1.Service_Type_Code = T3.Service_Type_Code AND T3.Workshop_Group_ID = T2.Workshop_Group_ID WHERE T1.Parent_Service_Type_Code = 1