Fixes #12129 : enhance bigquery sample data query

[duongphannamhung]

Describe your changes:

read more with my enhancement issue #12129

Another concern: in my opinion, profiler fetching data with row count type will also be executed with default percent to get the efficiency query and then limit with row count. It would be nice for a big table, but not really good for the really small one (< 500 rows). Hope to hear your advice for better solution.

Type of change:

• Bug fix
• Improvement
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation

Checklist:

• I have read the CONTRIBUTING document.
• My PR title is Fixes <issue-number>: <short explanation>
• I have commented on my code, particularly in hard-to-understand areas.
• For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[github-actions]

Hi there 👋 Thanks for your contribution!

The OpenMetadata team will review the PR shortly! Once it has been labeled as safe to test, the CI workflows
will start executing and we'll be able to make sure everything is working as expected.

Let us know if you need any help!

[github-actions]

Hi there 👋 Thanks for your contribution!

The OpenMetadata team will review the PR shortly! Once it has been labeled as safe to test, the CI workflows
will start executing and we'll be able to make sure everything is working as expected.

Let us know if you need any help!

[github-actions]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR.
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[cypress]

Passing run #25318 ↗︎

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Details:

Update profiler_source.py
Project: openmetadata	Commit: 88efc1e671
Status: Passed	Duration: 28:34 💡
Started: Jul 3, 2023 2:32 PM	Ended: Jul 3, 2023 3:01 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[harshach]

Thanks @duongphannamhung for the contribution. We will review the PR cc @TeddyCr

[harshach]

instead of having if else here, it would be better to have overriding capabilities with-in each connector

[duongphannamhung]

I've added the SamplerProtocol for future inheritance and mapping, hope it's working out

[duongphannamhung]

I've just modified name of method get_sample_query -> get_bq_sample_query. Cause of method random_sample which gets Table Profile still have to use get_sample_query to convert to sqlalchemy structure.

In sqlalchemy 2.0 it has tablesample but 1.4 current don't. Hope a bump for little more straightforward current random sample query.
https://docs.sqlalchemy.org/en/20/core/selectable.html#sqlalchemy.sql.expression.tablesample

[github-actions]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR.
You can also use pre-commit to automate the Python code formatting.

You can install the pre-commit hooks with make install_test precommit_install.

[sonarcloud]

[open-metadata-ingestion] Kudos, SonarCloud Quality Gate passed!   

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