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

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# bitmap_min
## description
### Syntax

`BIGINT BITMAP_MIN(BITMAP input)`

计算并返回 bitmap 中的最小值.

## example

```
mysql> select bitmap_min(bitmap_from_string('')) value;
+-------+
| value |
+-------+
|  NULL |
+-------+

mysql> select bitmap_min(bitmap_from_string('1,9999999999')) value;
+-------+
| value |
+-------+
|     1 |
+-------+
```

## keyword

    BITMAP_MIN,BITMAP