use proxy create table ，show unexpected results

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Which version of ShardingSphere did you use?

cf769d3200b0b9a6afe1e7dd210c50f486a8530a

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

Proxy

Expected behavior

mysql> CREATE TABLE tb_user (
    -> id INT AUTO_INCREMENT PRIMARY KEY ,
    -> NAME VARCHAR ( 10 ) NOT NULL UNIQUE ,
    -> age INT CHECK ( age > 0 and age <= 120 ) ,
    -> STATUS CHAR ( 1 ) DEFAULT '1' ,
    -> gender CHAR ( 1 )
    -> );
Query OK, 0 rows affected (0.02 sec)

mysql> show create table tb_user;
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table   | Create Table                                                                                                                                                                                                                                                                                                                                                                        |
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tb_user | CREATE TABLE `tb_user` (
  `id` int NOT NULL AUTO_INCREMENT,
  `NAME` varchar(10) NOT NULL,
  `age` int DEFAULT NULL,
  `STATUS` char(1) DEFAULT '1',
  `gender` char(1) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `NAME` (`NAME`),
  CONSTRAINT `tb_user_chk_1` CHECK (((`age` > 0) and (`age` <= 120)))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci |
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

Actual behavior

mysql> CREATE TABLE tb_user (
    -> id INT AUTO_INCREMENT PRIMARY KEY ,
    -> NAME VARCHAR ( 10 ) NOT NULL UNIQUE ,
    -> age INT CHECK ( age > 0 and age <= 120 ) ,
    -> STATUS CHAR ( 1 ) DEFAULT '1' ,
    -> gender CHAR ( 1 )
    -> );
Query OK, 0 rows affected (0.03 sec)

mysql>
mysql> show create table tb_user;
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table   | Create Table                                                                                                                                                                                                                                                                              |
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tb_user | CREATE TABLE `tb_user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `NAME` varchar(10) NOT NULL,
  `age` int(11) DEFAULT NULL,
  `STATUS` char(1) DEFAULT '1',
  `gender` char(1) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `NAME` (`NAME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 |
+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

Reason analyze (If you can)

Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.

Example codes for reproduce this issue (such as a github link).

Start with the ShardingSphere-Proxy path that handles MySQL CREATE TABLE and SHOW CREATE TABLE statements. Reproduce the tb_user example and compare the expected and actual definitions, including the missing CHECK constraint and changed integer display; done means the proxy returns the expected table definition.