feat: MySQL table support comment

[sinkhaha]

Description of change

MySQL table support comment
Fixes #9991

Pull-Request Checklist

• Code is up-to-date with the master branch
• npm run format to apply prettier formatting
• npm run test passes with this change
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits follow conventions explained in CONTRIBUTING.md

[pleerock]

Why do you have package-lock file changed?

There is a problem with your implementation - sync doesn't work such way. If you put comment to entity - it will be stored in the database. If you change comment on the same entity later on - it won't sync the changes.

We need implementation to be full-fledged before we can merge the changes.

[sinkhaha]

Why do you have package-lock file changed?

There is a problem with your implementation - sync doesn't work such way. If you put comment to entity - it will be stored in the database. If you change comment on the same entity later on - it won't sync the changes.

We need implementation to be full-fledged before we can merge the changes.

Thanks, this is an oversight on my part, I'm not familiar with the sync, can you give me some guidance? Is it okay to modify the renameTable method of the MysqlQueryRunner class or add a new method to modify table comments separately

[pleerock]

@sinkhaha let's say you put comment to entity. Comment now is in database for your table. Now change comment in the entity. Syncer must "catch up" this change and update the table comment in the database.

Synchronization is made by dataSource.synchronize() method.

To understand how it works, play around with let's say columns -> add column, remove column from your entity -> database table will be updated.

To understand how it works from the code perspective - you have to learn how QueryRunner (mysql one in your case) work.

[sinkhaha]

@pleerock Thanks. I have made some changes. Please review it again when you have time.

[yuntian001]

ci/circleci: build — Your tests failed on CircleCI

Whether you have time to fix

[sinkhaha]

@yuntian001 This doesn't seem to be an error caused by my changes. Is it okay to rebuild it? I don't have permission to trigger.