mysql查询错误 FUNCTION nvl does not exist
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mysql 中没有nvl ()函数,使用ifnull代替，示例如下:
mysql> SELECT ifnull(sum(P.PAYMONEY),0) totalmoney FROM jc_pay P;
+------------+
| totalmoney |
+------------+
| 0 |
+------------+
1 row in set
mysql> SELECT nvl(sum(P.PAYMONEY),0) totalmoney FROM jc_pay P;
1305 - FUNCTION hb.nvl does not exist
mysql>
0 0
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