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### What changes were proposed in this pull request? Support SparkSQL use iN/EXISTS with subquery in JOIN condition. ### Why are the changes needed? Support SQL use iN/EXISTS with subquery in JOIN condition. ### Does this PR introduce any user-facing change? This PR is for enable user use subquery in `JOIN`'s ON condition. such as we have create three table ``` CREATE TABLE A(id String); CREATE TABLE B(id String); CREATE TABLE C(id String); ``` we can do query like : ``` SELECT A.id from A JOIN B ON A.id = B.id and A.id IN (select C.id from C) ``` ### How was this patch tested? ADDED UT Closes #25854 from AngersZhuuuu/SPARK-29145. Lead-authored-by: angerszhu <angers.zhu@gmail.com> Co-authored-by: AngersZhuuuu <angers.zhu@gmail.com> Signed-off-by: Takeshi Yamamuro <yamamuro@apache.org> |
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