MySQL数学函数简明总结(8)
2015-04-11 00:14 来源: 锦尚中国 点击:
mysql> select SIGN(-21), SIGN(-0),SIGN(0), SIGN(0.0), SIGN(21);
+-----------+----------+---------+-----------+----------+
| SIGN(-21) | SIGN(-0) | SIGN(0) | SIGN(0.0) | SIGN(21) |
+-----------+----------+---------+-----------+----------+
| -1 | 0 | 0 | 0 | 1 |
+-----------+----------+---------+-----------+----------+
12. POW(X,Y), POWER(X,Y)和EXP(X)
POW(X,Y)与POWER(X,Y)功能相同，用于返回Ｘ的Ｙ次乘方的结果值
复制代码 代码如下:
