JQ()

Function Description

The JQ() function is used to parse and convert JSON data based on jq expressions. Unlike TRY_JQ(), TRY_JQ() supports returning null values ​​when an error occurs, while JQ() directly throws an exception when an error occurs.

Grammar Structure

select jq(jsonDoc, pathExpression);

Parameter definition

Parameters	Description
jsonDoc	This is a column or expression containing JSON data.
pathExpression	Used to specify how fields are extracted from JSON data

Example

mysql> select jq('{"foo": 128}', '.foo');
+-----------------------------+
| jq({"foo": 128}, .foo) |
+-----------------------------+
| 128 |
+-----------------------------+
1 row in set (0.01 sec)

mysql> select jq(null, '.foo');
+---------------------+
| jq(null, .foo) |
+---------------------+
| NULL |
+---------------------+
1 row in set (0.00 sec)

mysql> select jq('{"id": "sample", "10": {"b": 42}}', '{(.id): .["10"].b}');
+------------------------------------------------------------------------------------------------------------------------------
| jq({"id": "sample", "10": {"b": 42}}, {(.id): .["10"].b}) |
+------------------------------------------------------------------------------------------------------------------------------
| {"sample":42} |
+------------------------------------------------------------------------------------------------------------------------------
1 row in set (0.00 sec)

mysql> select jq('[1, 2, 3]', '.foo & .bar');
ERROR 1105 (HY000): unexpected token "&"