[Err] 1111 - Invalid use of group function
這句話的意思是說集函式用法無效
我的SQL語句是:
SELECT s.student_id,s.student_name FROM student s,score sc WHERE s.student_id =sc.student_id AND COUNT(s.student_id)
當我執行到這裡的時候就丟擲了這個異常
把SQL語句改成:
SELECT s.student_id,s.student_name FROM student s,score sc WHERE s.student_id =sc.student_id GROUP BY s.student_id HAVING COUNT(s.student_id)
問題解決了
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