[Feature Request]: 希望能可以拿到SQL中支持的字符有哪些的文档

### Is there an existing issue for the same feature request?

- [X] I have checked the existing issues.

### Is your feature request related to a problem?

```Markdown
目前创建发布的SQL为：
prepare sql_content from create publication pub123 database testb account 018f5646_c2ad_7e36_becd_2f1db35fb30c,test_instance_id comment "123";
修改发布的comment的SQL为：
alter publication pub2 comment "this is pub2";

其中comment的支持哪些字符，需要一个list。
```

### Describe the feature you'd like

如上

### Describe implementation you've considered

_No response_

### Documentation, Adoption, Use Case, Migration Strategy

_No response_

### Additional information

_No response_