2020-04-25
json_extract is a function for extract data from a JSON document both in MySQL and MariaDB. The function normally works fine, for example
set @j = '{"num": 42, "list": [1, 2, 3], "obj": {"name": "Edward Stark"}}'; select json_extract(@j, '$.num') as num, json_extract(@j, '$.list') as list, json_extract(@j, '$.obj') as obj; +------+-----------+--------------------------+ | num | list | obj | +------+-----------+--------------------------+ | 42 | [1, 2, 3] | {"name": "Edward Stark"} | +------+-----------+--------------------------+ But when it comes to a single JSON string, the results of json_extract is not always as expected.
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