query: SELECT sum(crs_credit) ,  dept_code FROM course GROUP BY dept_code
question: What is the total credit do each department offer?
query_toks: SELECT sum ( crs_credit ) , dept_code FROM course GROUP BY dept_code
query_toks_no_value: select sum ( crs_credit ) , dept_code from course group by dept_code
question_toks: What is the total credit do each department offer?