# **LOG10()**

## **函数说明**

LOG10(X) 函数返回以 10 为底 X 的对数。

## **函数语法**

```text
> LOG10(X)
```

## **参数释义**

| 参数 | 说明               |
|----|------------------|
| X  | 必要参数，任何当前支持的数值数据 |

## **示例**

```text
drop table if exists t1;
create table t1(a float, b float);
insert into t1 values(10000,3784.159);
insert into t1 values(2738,682.325);

mysql> select log10(a),log10(b) from t1;
+-------------------+--------------------+
| log10(a)             | log10(b)              |
+-------------------+--------------------+
|                 4 |  3.577969368581086 |
| 3.437433443797971 | 2.8339912916439594 |
+-------------------+--------------------+
2 rows in set (0.00 sec)
```