> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/bit-functions-and-operators/bitwise-not.md).

# \~

## Syntax

```bnf
~
```

## Description

Bitwise NOT. Converts the value to 4 bytes binary and inverts all bits.

## Examples

```sql
SELECT 3 & ~1;
+--------+
| 3 & ~1 |
+--------+
|      2 |
+--------+

SELECT 5 & ~1;
+--------+
| 5 & ~1 |
+--------+
|      4 |
+--------+
```

## See Also

* [Operator Precedence](/docs/server/reference/sql-structure/operators/operator-precedence.md)

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