版权声明:No Rain No Rainbow https://blog.csdn.net/xiangyuenacha/article/details/84335202
这句话的意思是说集函数用法无效
我的SQL语句是:
SELECT s.student_id,s.student_name FROM student s,score sc WHERE s.student_id =sc.student_id AND COUNT(s.student_id)
当我执行到这里的时候就抛出了这个异常
把SQL语句改成:
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)
问题解决了