The Ultimate Guide to High Availability with MariaDB

JSON_OBJECT_TO_ARRAY

MariaDB starting with 11.2.0

JSON_OBJECT_TO_ARRAY was added in MariaDB 11.2.0.

Syntax

JSON_OBJECT_TO_ARRAY(Obj)

Description

It is used to convert all JSON objects found in a JSON document to JSON arrays where each item in the outer array represents a single key-value pair from the object. It is used when we want not just common keys, but also common values. It can be used in conjunction with JSON_ARRAY_INTERSECT().

Examples

SET @obj1= '{ "a": [1, 2, 3], "b": { "key1":"val1", "key2": {"key3":"val3"} }}';

SELECT JSON_OBJECT_TO_ARRAY(@obj1);
+-----------------------------------------------------------------------+
| JSON_OBJECT_TO_ARRAY(@obj1)                                           |
+-----------------------------------------------------------------------+
| [["a", [1, 2, 3]], ["b", {"key1": "val1", "key2": {"key3": "val3"}}]] |
+-----------------------------------------------------------------------+

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