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

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# like
## description
### syntax

'BOOLEAN like(VARCHAR str, VARCHAR pattern)'

对字符串 str 进行模糊匹配，匹配上的则返回 true，没匹配上则返回 false。

like 匹配/模糊匹配，会与 % 和 _ 结合使用。

'a'      // 精准匹配，和 `=` 效果一致。
'%a'     // 以a结尾的数据
'a%'     // 以a开头的数据
'%a%'    // 含有a的数据
'_a_'    // 三位且中间字母是 a 的
'_a'     // 两位且结尾字母是 a 的
'a_'     // 两位且开头字母是 a 的

## example

```
// 返回 k1 字符串中包含 a 的数据
mysql > select k1 from test where k1 like '%a%';
+-------+
| k1    |
+-------+
| a     |
| bab   |
+-------+

// 返回 k1 字符串中等于 a 的数据
mysql > select k1 from test where k1 like 'a';
+-------+
| k1    |
+-------+
| a     |
+-------+
```

## keyword
LIKE