> 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/string-functions/bin.md).

# BIN

## Syntax

```bnf
BIN(N)
```

## Description

Returns a string representation of the binary value of the given longlong (that is, [BIGINT](/docs/server/reference/data-types/numeric-data-types/bigint.md)) number. This is equivalent to [CONV(N,10,2)](/docs/server/reference/sql-functions/numeric-functions/conv.md). The argument should be positive. If it is a `FLOAT`, it will be truncated. Returns `NULL` if the argument is `NULL`.

## Examples

```sql
SELECT BIN(12);
+---------+
| BIN(12) |
+---------+
| 1100    |
+---------+
```

## See Also

* [Binary literals](/docs/server/reference/sql-structure/sql-language-structure/binary-literals.md)
* [CONV()](/docs/server/reference/sql-functions/numeric-functions/conv.md)
* [OCT()](/docs/server/reference/sql-functions/numeric-functions/oct.md)
* [HEX()](/docs/server/reference/sql-functions/string-functions/hex.md)

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

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