表结构如下：-

mysql> select * from formjson;
+----+---------------------------------------------------------+
| id | jsonData                                        |
+----+---------------------------------------------------------+
|  1 | {"721005":"NO","720931":"1156","720940":"aegiseng",}    |
|  2 | {"721005":"NO","720931":"1156","720940":"aegiseng",}    |
|  3 | {"721005":"NO","720931":"50253","720940":"d1-gateway",} |
|  4 | {"721005":"NO","720931":"11102","720940":"uxinfra",}    |
|  5 | {"720931":"1152","720940":"zappops-notify",}            |
+----+---------------------------------------------------------+
5 rows in set (0.00 sec)

我想删除jsondata中最后出现的逗号，即“，}”到“}”
我试过了

mysql> update formjson set jsonData=CONCAT(TRIM(TRAILING ',}' FROM jsonData),'}') where jsonData like '%,}';

上面是工作。
但是在mysql中有没有其他方法可以做到这一点，比如使用regexp用户定义函数等？