Task: Text to Code
Input (English): Step 1: For each row in Ref_Locations table, find the corresponding rows in Document_Locations table.
Step 2: find the number of rows of each value of Ref_Locations's Location_Code in the results of step 1.
Step 3: find Document_Locations's Location_Code in the results of step 1 whose corresponding value in step 2 is greater than or equals 3
Output (English): SELECT T2.Location_Code FROM Ref_Locations AS T1 JOIN Document_Locations AS T2 ON T1.Location_Code = T2.Location_Code GROUP BY T1.Location_Code HAVING Count ( * ) > = 3