Task: Text to Code
Input (English): Step 1: find the number of rows of each value of Service_Type_Code in Ref_Service_Types table.
Step 2: find Service_Type_Description, Service_Type_Code of Ref_Service_Types table with largest value in the results of step 1
Output (English): SELECT Service_Type_Description , Service_Type_Code FROM Ref_Service_Types GROUP BY Service_Type_Code ORDER BY Count ( * ) Desc LIMIT 1