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

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# bitmap_and_not
## description
### Syntax

`BITMAP BITMAP_AND_NOT(BITMAP lhs, BITMAP rhs)`

将两个bitmap进行与非操作并返回计算结果。

## example

```
mysql> select bitmap_count(bitmap_and_not(bitmap_from_string('1,2,3'),bitmap_from_string('3,4,5'))) cnt;
+------+
| cnt  |
+------+
|    2 |
+------+
```

## keyword

    BITMAP_AND_NOT,BITMAP