[Enhancement]support symbol for mysql importer

[khoahuynhdev]

Summary

This is valid in mysql

create table products (
  id int,
  name varchar(255),
  weight_measurement ENUM('lb', 'kg', '%'),
  primary key(`id`)
) engine=innodb default charset=utf8;

From dbdiagram mysql import

The enhancement

Lasting Changes (Technical)

• Add supported symbol to 'ExpChar'

Checklist

Please check directly on the box once each of these are done

• Documentation (if necessary)
• Tests (integration test/unit test)
• Integration Tests Passed
• Code Review

[khanh-tran-quoc]

How about other characters ^?&*... anh?

[khoahuynhdev]

I think we just need to cover % in this case because % is usually used as unit of measurement.
I haven't seen use cases for other characters so until the case arises, we can support them later.

[khanh-tran-quoc]

ok anh