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## What changes were proposed in this pull request? This PR update SortMergeJoinExec to support LeftSemi/LeftAnti, so it could support all the join types, same as other three join implementations: BroadcastHashJoinExec, ShuffledHashJoinExec,and BroadcastNestedLoopJoinExec. This PR also simplify the join selection in SparkStrategy. ## How was this patch tested? Added new tests. Author: Davies Liu <davies@databricks.com> Closes #12668 from davies/smj_semi. |
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