1582 - Incorrect parameter count in the call to native function 'ISNULL',

时间：2018-07-22 16:14:11 收藏：0 阅读：3629

错误代码：

SELECT SNUM,AVG(ISNULL(SCORE,0)) FROM SC
WHERE SNUM IN
(
select SNUM from sc 
where score < 90 
group by SNUM 
having count(*)>2)
GROUP BY SNUM

错误提示：

1582 - Incorrect parameter count in the call to native function ‘ISNULL‘,

错误原因：

mysql识别不了ISNULL，支持IFNULL，

修改后代码：

SELECT SNUM,AVG(IFNULL(SCORE,0)) FROM SC
WHERE SNUM IN
(
select SNUM from sc 
where score < 90 
group by SNUM 
having count(*)>2)
GROUP BY SNUM

运行无误！

原文：https://www.cnblogs.com/laochoubiji/p/9350241.html

1582 - Incorrect parameter count in the call to native function &#39;ISNULL&#39;,