Add MySQL write support

[gengteng]

Hey @phillipleblanc ,

I’ve got an initial version of the MySQL write support ready. No tests or manual validation yet, but I wanted to get this PR up and continue working on those next.

Cheers!

[gengteng]

Summary of Changes

1. MySQL Write Support:

   • Implemented MySQLTableWriter and MySQLDataSink to enable inserting data into MySQL.

2. DataType Handling:

   • For DataType::Struct, similar to SQLite, the data is stored in JSON format.
   • Mapped DataType::Binary and DataType::LargeBinary to ColumnType::Blob.

3. Refactor:

   • Moved the to_datafusion_error function to the util module for better organization.

Dependency

• This PR depends on feat: add support for converting LargeUtf8/LargeString in try_cast_to datafusion-federation#71, as explained in more detail in the related PR.

[phillipleblanc]

@gengteng I'll look at reviewing this PR over the next week. Do you know why the integration test is failing?

[gengteng]

Hi @phillipleblanc ,

The integration test is failing because it depends on another PR, feat: add support for converting LargeUtf8/LargeString in try_cast_to (datafusion-federation#71). The test code in my PR uses changes introduced in that PR. Once it’s merged and released, the test should pass.

If you could help push for that PR to be merged, it would be greatly appreciated. Alternatively, I could extract the relevant logic into this PR, but that would result in code duplication.

Or do you have any better suggestions?

Thank you for reviewing!

[phillipleblanc]

I've reviewed the PR in datafusion-federation

[phillipleblanc]

Nice PR! I have a couple of comments, but this is looking good.

[gengteng]

resolve #122

[holicc]

@gengteng Is this PR still in progress? I recently needed this feature, and if there's anything I can do to help, I'd be happy to assist. :)

[gengteng]

@gengteng Is this PR still in progress? I recently needed this feature, and if there's anything I can do to help, I'd be happy to assist. :)

Hi @holicc,

Thank you so much for offering to help—I really appreciate it! 😊

I’ve resolved all issues locally and merged the latest version. All tests pass successfully on my local machine. However, the tests are still failing on GitHub Actions, possibly due to memory or disk space limitations (exit code 143).

Could you please help check if there are resource constraints or other underlying issues? Thanks again for your assistance!

[holicc]

@gengteng Is this PR still in progress? I recently needed this feature, and if there's anything I can do to help, I'd be happy to assist. :)

Hi @holicc,

Thank you so much for offering to help—I really appreciate it! 😊

I’ve resolved all issues locally and merged the latest version. All tests pass successfully on my local machine. However, the tests are still failing on GitHub Actions, possibly due to memory or disk space limitations (exit code 143).

Could you please help check if there are resource constraints or other underlying issues? Thanks again for your assistance!

Yes, all tests have passed on my laptop too. It seems the problem is not with the code. @phillipleblanc, can you retry the actions?

[phillipleblanc]

Thanks @gengteng!