JSON functions were added in MariaDB 10.2.3.
 
Syntax
------ 
JSON_REPLACE(json_doc, path, val[, path, val] ...)
 
Description
----------- 
Replaces existing values in a JSON document, returning the
result, or NULL if any of the arguments are NULL. 
 
An error will occur if the JSON document is invalid, the
path is invalid or if the path contains a * or ** wildcard.
 
Paths and values are evaluated from left to right, with the
result from the earlier evaluation being used as the value
for the next.
 
JSON_REPLACE can only update data, while JSON_INSERT can
only insert. JSON_SET can update or insert data. 
 
Examples
-------- 
SELECT JSON_REPLACE('{ "A": 1, "B": [2, 3]}',
'$.B[1]', 4);
+-----------------------------------------------------+
| JSON_REPLACE('{ "A": 1, "B": [2, 3]}', '$.B[1]',
4) |
+-----------------------------------------------------+
| { "A": 1, "B": [2, 4]} |
+-----------------------------------------------------+
 

 
 
 
 
 
 
 

URL: https://mariadb.com/kb/en/json_replace/