Notes
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SELECT evaluation FROM attendace;
--query to check the number of times studetn have attended courses
SELECT COUNT(student_id)
FROM attendance;
--query to find the number of curses the student has attended
SELECT student_id, COUNT(evaluation)
FROM attendance
GROUP BY(student_id);
--query to list the number of students having id greater than 6000
SELECT student_id,student_firstname
FROM students
WHERE student_id>6000;
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