szehon-ho opened a new pull request, #41683:
URL: https://github.com/apache/spark/pull/41683
### What changes were proposed in this pull request?
This pr adds SQL UDF: with_options('table', map('foo', 'bar')).
Details:
1. Add RelationWithOptions UDF object
2. Add ResolveRelationsWithOptions rule to resolve that to a Relation, with
the given options.
### Why are the changes needed?
Currently there is no way to dynamically configure individual DataSource
relations in Spark SQL query.
This is a continuation of the effort in
https://github.com/apache/spark/pull/34072, and based on the comment there
https://github.com/apache/spark/pull/34072#issuecomment-968451305, to use a TVF
instead of query hints.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Unit test in DataSourceV2SQLSuite
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