Terry Kim 5b4816cfc8 [SPARK-34320][SQL] Migrate ALTER TABLE DROP COLUMNS commands to use UnresolvedTable to resolve the identifier ... ### What changes were proposed in this pull request? This PR proposes to migrate the following `ALTER TABLE ... DROP COLUMNS` command to use `UnresolvedTable` as a `child` to resolve the table identifier. This allows consistent resolution rules (temp view first, etc.) to be applied for both v1/v2 commands. More info about the consistent resolution rule proposal can be found in [JIRA](https://issues.apache.org/jira/browse/SPARK-29900) or [proposal doc](https://docs.google.com/document/d/1hvLjGA8y_W_hhilpngXVub1Ebv8RsMap986nENCFnrg/edit?usp=sharing). ### Why are the changes needed? This is a part of effort to make the relation lookup behavior consistent: [SPARK-29900](https://issues.apache.org/jira/browse/SPARK-29900). ### Does this PR introduce _any_ user-facing change? After this PR, the above `ALTER TABLE ... DROP COLUMNS` commands will have a consistent resolution behavior. ### How was this patch tested? Updated existing tests. Closes #32854 from imback82/alter_alternative. Authored-by: Terry Kim <yuminkim@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>		2021-06-24 14:59:25 +00:00
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benchmarks	[SPARK-34981][SQL][FOLLOWUP] Use SpecificInternalRow in ApplyFunctionExpression	2021-05-24 17:25:24 +09:00
src	[SPARK-34320][SQL] Migrate ALTER TABLE DROP COLUMNS commands to use UnresolvedTable to resolve the identifier	2021-06-24 14:59:25 +00:00
pom.xml	[SPARK-33662][BUILD] Setting version to 3.2.0-SNAPSHOT	2020-12-04 14:10:42 -08:00