support vector field

[wd0517]

Now TiDB serverless support vector data type, this pr let django-tidb support VectorField to communite with it.

[dveeden]

Should we wait for this to be in public beta and/or pingcap/tidb master?

[dveeden]

Is there any testing/CI for this?

[wd0517]

Should we wait for this to be in public beta and/or pingcap/tidb master?

As far as I know, PingCAP will soon (private preview may be April?) release the vector data type in TiDB Serverless. We should prepare the SDK beforehand and do not need to wait for public beta. Additionally, we have already marked VectorField as beta in the document.

[wd0517]

Is there any testing/CI for this?

There are only manual test for now, since it can only test in TiDB Serverless, its not suitable for current test script.

[zhangyangyu]

Treat it as a variant or default? Maybe just like some features are only available on some specific versions? Sooner or later I think the vector feature should be available in all TiDB deployments.

[wd0517]

Treat it as a variant or default? Maybe just like some features are only available on some specific versions? Sooner or later I think the vector feature should be available in all TiDB deployments.

It will only works in TiDB Cloud Serverless Cluster as far as I know, I haven't received a clear plan regarding when it will be available in pingcap/tidb master.

The VectorField is defined and enabled by the user, not as a built-in feature. Therefore, there is no need to check the TiDB version in django-tidb.

[wd0517]

Add tests: 46f73a0

There is currently only one test cluster available, so it does not support running tests in parallel. I will utilize the TiDB Serverless branch feature once vector is released to TiDB Cloud Production.