---
{
    "title": "starts_with",
    "language": "zh-CN"
}
---

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# starts_with
## description
### Syntax

`BOOLEAN STARTS_WITH (VARCHAR str, VARCHAR prefix)`

如果字符串以指定前缀开头，返回true。否则，返回false。任意参数为NULL，返回NULL。

## example

```
MySQL [(none)]> select starts_with("hello world","hello");
+-------------------------------------+
| starts_with('hello world', 'hello') |
+-------------------------------------+
|                                   1 |
+-------------------------------------+

MySQL [(none)]> select starts_with("hello world","world");
+-------------------------------------+
| starts_with('hello world', 'world') |
+-------------------------------------+
|                                   0 |
+-------------------------------------+
```
## keyword
STARTS_WITH