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mysql查詢錯誤 FUNCTION nvl does not exist

               

mysql 中沒有nvl ()函式,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>