Syntax

JSON_COMPACT(json_doc)

Description

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

Example

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]} |
+-------------------+------------------------+