CEIL(X)
CEILING(X)
该函数返回的最小整数值，但不能小于X。 请看下面的例子：
mysql> SELECT CEILING(3.46); +---------------------------------------------------------+ | CEILING(3.46) | +---------------------------------------------------------+ | 4 | +---------------------------------------------------------+ 1 row in set (0.00 sec) mysql> SELECT CEIL(-6.43); +---------------------------------------------------------+ | CEIL(-6.43) | +---------------------------------------------------------+ | -6 | +---------------------------------------------------------+ 1 row in set (0.00 sec)
