floor

floor

description

Syntax

BIGINT floor(DOUBLE x) 返回小于或等于x的最大整数值.

提示

该函数的另一个别名为 dfloor。

example

mysql> select floor(1);
+------------+
| floor(1.0) |
+------------+
|          1 |
+------------+
mysql> select floor(2.4);
+------------+
| floor(2.4) |
+------------+
|          2 |
+------------+
mysql> select floor(-10.3);
+--------------+
| floor(-10.3) |
+--------------+
|          -11 |
+--------------+

keywords

FLOOR, DFLOOR