Task: Text to Code
Input (English): Step 1: find the personal_name of Course_Authors_and_Tutors table.
Step 2: find the personal_name of Course_Authors_and_Tutors table.
Step 3: show the rows that are in both the results of step 1 and the results of step 2
Output (English): SELECT personal_name FROM Course_Authors_and_Tutors INTERSECT SELECT personal_name FROM Course_Authors_and_Tutors