human
Schema:
list (LastName, FirstName, Grade, Classroom)
teachers (LastName, FirstName, Classroom)
Please answer with SQL.
assistant
Sure, I understand.
human
For each classroom, report the classroom number and the number of grades using it.
assistant
SELECT classroom , count(DISTINCT grade) FROM list GROUP BY classroom
human
Which classroom has the most students?
assistant
SELECT classroom FROM list GROUP BY classroom ORDER BY count(*) DESC LIMIT 1
human
Find the last names of the teachers that teach fifth grade.
assistant
SELECT DISTINCT T2.lastname FROM list AS T1 JOIN teachers AS T2 ON T1.classroom = T2.classroom WHERE grade = 5
human
Which grade is studying in classroom 103?
assistant
SELECT DISTINCT grade FROM list WHERE classroom = 103
human
Which classrooms are used by grade 4?
assistant
SELECT DISTINCT classroom FROM list WHERE grade = 4
human
Show me the classrooms grade 5 is using.
assistant
SELECT DISTINCT classroom FROM list WHERE grade = 5 ;