log10

description

Syntax

DOUBLE log10(DOUBLE x) 返回以10为底的x的自然对数.

提示

该函数的另一个别名为 dlog10。

example

mysql> select log10(1);
+------------+
| log10(1.0) |
+------------+
|          0 |
+------------+
mysql> select log10(10);
+-------------+
| log10(10.0) |
+-------------+
|           1 |
+-------------+
mysql> select log10(16);
+--------------------+
| log10(16.0)        |
+--------------------+
| 1.2041199826559248 |
+--------------------+

keywords

LOG10, DLOG10