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#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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# distributed under the License is distributed on an "AS IS" BASIS,
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mysql> drop table if exists test.t
mysql> create table test.t(col_json json, col_string varchar(100), col_others int)
mysql> alter table test.t set tiflash replica 1
mysql> insert into test.t values(null, null, null), ('{\"a\" : \"b\", \"aa\" : \"bb\"}', '{\"a\" : \"b\", \"aa\" : \"bb\"}', 100), ('{\"a\" : \"b\", \"aa\" : \"bb\"}', 'gdfgfd', 100) #NO_UNESCAPE

func> wait_table test t

mysql> set tidb_allow_mpp=1;set tidb_enforce_mpp=1; set tidb_isolation_read_engines='tiflash'; select json_valid(col_json), json_valid(col_string), json_valid(col_others) from test.t;
+----------------------+------------------------+------------------------+
| json_valid(col_json) | json_valid(col_string) | json_valid(col_others) |
+----------------------+------------------------+------------------------+
|                 NULL |                   NULL |                      0 |
|                    1 |                      1 |                      0 |
|                    1 |                      0 |                      0 |
+----------------------+------------------------+------------------------+

# Clean up.
mysql> drop table if exists test.t;