human
Schema:
classroom (building, room_number, capacity)
department (dept_name, building, budget)
course (course_id, title, dept_name, credits)
instructor (ID, name, dept_name, salary)
section (course_id, sec_id, semester, year, building, room_number, time_slot_id)
teaches (ID, course_id, sec_id, semester, year)
student (ID, name, dept_name, tot_cred)
takes (ID, course_id, sec_id, semester, year, grade)
advisor (s_ID, i_ID)
time_slot (time_slot_id, day, start_hr, start_min, end_hr, end_min)
prereq (course_id, prereq_id)
Please answer with SQL.
assistant
Sure, I understand.
human
Find the names of the top 3 departments that provide the largest amount of courses?
assistant
SELECT dept_name FROM course GROUP BY dept_name ORDER BY count(*) DESC LIMIT 3
human
Find the name of the students and their department names sorted by their total credits in ascending order.
assistant
SELECT name , dept_name FROM student ORDER BY tot_cred
human
Find the title, credit, and department name of courses that have more than one prerequisites?
assistant
SELECT T1.title , T1.credits , T1.dept_name FROM course AS T1 JOIN prereq AS T2 ON T1.course_id = T2.course_id GROUP BY T2.course_id HAVING count(*) > 1
human
How many departments offer courses?
assistant
SELECT count(DISTINCT dept_name) FROM course
human
Find the name of the department that offers the highest total credits?
assistant
SELECT dept_name FROM course GROUP BY dept_name ORDER BY sum(credits) DESC LIMIT 1
human
How many total credits are offered by each department?
assistant
SELECT SUM( credits ) , dept_name FROM course GROUP BY dept_name ;