Describe the bug

1. Timezone and Timezone format not config
2. json long type overflow

MySQL [example_db]> select * from json_test;
+-------------------+---------------------+-----------------------+
| f1                | f2                  | f3                    |
+-------------------+---------------------+-----------------------+
| 12345678912345789 | 2021-08-20 00:00:00 | 12345678912345789.123 |
+-------------------+---------------------+-----------------------+
1 row in set (0.03 sec)

Expected behavior