mysql 5.7 without view check_constraints

[travelliu]

There is a check constraint after mySQL 8.0, and the previous version did not have view check_constraints

my:root@127/mtkd=> \d task_result_details
error: failed to describe BASE TABLE mtkd.task_result_details: failed to list constraints: Error 1109 (42S02): Unknown table 'check_constraints' in information_schema
my:root@127/mtkd=> desc task_result_details;
    Field    |     Type     | Null | Key | Default |     Extra      
-------------+--------------+------+-----+---------+----------------
 id          | bigint(20)   | NO   | PRI |         | auto_increment 
 task_id     | bigint(20)   | YES  | MUL |         |  
 run_id      | bigint(20)   | YES  |     |         |  
 type_name   | varchar(20)  | YES  |     |         |  
 object_id   | varchar(50)  | YES  |     |         |  
 src_name    | varchar(200) | YES  |     |         |  
 tgt_name    | varchar(200) | YES  |     |         |  
 status      | varchar(20)  | YES  |     |         |  
 start_time  | bigint(20)   | YES  |     |         |  
 finish_time | bigint(20)   | YES  |     |         |  
 use_time    | bigint(20)   | YES  |     |         |  
 src_sql     | mediumblob   | YES  |     |         |  
 tgt_sql     | mediumblob   | YES  |     |         |  
 row_num     | bigint(20)   | YES  |     |         |  
 target_num  | bigint(20)   | YES  |     |         |  
 ignore_num  | bigint(20)   | YES  |     |         |  
 source_diff | bigint(20)   | YES  |     |         |  
 target_diff | bigint(20)   | YES  |     |         |  
 size        | bigint(20)   | YES  |     |         |  
 reason      | mediumblob   | YES  |     |         |  
 reason1     | mediumblob   | YES  |     |         |  
 reason2     | mediumblob   | YES  |     |         |  
 warning     | mediumblob   | YES  |     |         |  
(23 rows)

my:root@127/mtkd=> select version();
 version()  
------------
 5.7.32-log 
(1 row)