MySQL 5.7 equivalent to PHP's json_decode()?

Question

I'm converting some php scripts into mysql stored procedures and have come across the usage of php's json_decode() on a result set's data. It occurs on a field which is stored as a mediumtext,utf8,utf8_unicode_ci

How can I perform the 'json_decode()' process using pure MySQL?

Sample data from the field:

{"93489":{"X1":{"net":164,"vat":33.6},"X2":{"net":0,"vat":0}}}

Answer 1

You can use JSON_EXTRACT function:

mysql> SELECT c, JSON_EXTRACT(c, "$.id"), g
     > FROM jemp
     > WHERE JSON_EXTRACT(c, "$.id") > 1
     > ORDER BY JSON_EXTRACT(c, "$.name");
+-------------------------------+-----------+------+
| c                             | c->"$.id" | g    |
+-------------------------------+-----------+------+
| {"id": "3", "name": "Barney"} | "3"       |    3 |
| {"id": "4", "name": "Betty"}  | "4"       |    4 |
| {"id": "2", "name": "Wilma"}  | "2"       |    2 |
+-------------------------------+-----------+------+
3 rows in set (0.00 sec)