> 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/special-functions/json-functions/json_compact.md).

# JSON\_COMPACT

## Syntax

```bnf
JSON_COMPACT(json_doc)
```

## Description

Removes all unnecessary spaces so the json document is as short as possible.

## Example

```sql
SET @j = '{ "A": 1, "B": [2, 3]}';

SELECT JSON_COMPACT(@j), @j;
+-------------------+------------------------+
| JSON_COMPACT(@j)  | @j                     |
+-------------------+------------------------+
| {"A":1,"B":[2,3]} | { "A": 1, "B": [2, 3]} |
+-------------------+------------------------+
```

## See Also

* [JSON video tutorial](https://www.youtube.com/watch?v=sLE7jPETp8g) covering JSON\_COMPACT.

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

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