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JSON_DELETE_KEY
Removes a named key and value from a JSON map. Maps are in the form:
{"a": 1, "b": 2, "c": 3}
JSON_DELETE_KEY(json, keyname)
Arguments
- json: a valid JSON array, or the name of a JSON column
- keyname: the key to delete
Return Type
- The complete array including the new element.
- SQL NULL if json is not a valid JSON array.
Examples
mysql> select json_delete_key('{"a": 1, "b": 2, "c": 3}', 'a') as del;
+---------------+
| del |
+---------------+
| {"b":2,"c":3} |
+---------------+
mysql> select json_delete_key('{"a": 1, "b": 2, "c": 3}', 'z') as nochange;
+---------------------+
| nochange |
+---------------------+
| {"a":1,"b":2,"c":3} |
+---------------------+
