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https://issues.apache.org/jira/browse/IMPALA-13324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17912939#comment-17912939
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ASF subversion and git services commented on IMPALA-13324:
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Commit ff2f2ba77ebe5bc83ef7f3e62d43c14af1f777eb in impala's branch
refs/heads/master from Peter Rozsa
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=ff2f2ba77 ]
IMPALA-13324: Enable statement rewrite for merge queries for IcebergMergeImpl
This change enables MERGE statements with source expressions containing
subqueries that require rewrite. The change adds implementation for
reset methods for each merge case, and properly handles resets for
MergeStmt and IcebergMergeImpl.
Tests:
- Planner test added with a merge query that requires a rewrite
- Analyzer test modified
Change-Id: I26e5661274aade3f74a386802c0ed20e5cb068b5
Reviewed-on: http://gerrit.cloudera.org:8080/22039
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Rewrite complex merge queries for IcebergMergeImpl
> --------------------------------------------------
>
> Key: IMPALA-13324
> URL: https://issues.apache.org/jira/browse/IMPALA-13324
> Project: IMPALA
> Issue Type: Sub-task
> Components: Frontend
> Reporter: Peter Rozsa
> Assignee: Peter Rozsa
> Priority: Minor
> Labels: impala-iceberg
>
> The underlying merge query statement is not rewritten, but it's possible to
> write a subquery as a source that requires rewrites to make the statement
> executable.
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