xuqinghuang opened a new issue, #538:
URL: https://github.com/apache/doris-flink-connector/issues/538

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and 
found no similar issues.
   
   
   ### Description
   
   ```
   CREATE TABLE `ddl_test1`
   (
       `id`                  bigint(20) unsigned NOT NULL AUTO_INCREMENT 
COMMENT '主键',
       `table_name`    varchar(128)        NOT NULL DEFAULT '' COMMENT '表名',
       PRIMARY KEY (`id`) USING BTREE
   ) ENGINE = InnoDB
     DEFAULT CHARSET = utf8mb4 COMMENT='test1';
   ```
   
   当进行 schema_change 的时候会有2个问题
   1. 表的注释是 = 号,而不是 test1
   2. id 类型对应的 doris 的 BIGINT,实际上应该是 LARGEINT,我看了下这是因为没有获取到  unsigned 这些修饰符导致
   
   ### Solution
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [X] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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