[SPARK-21645]left outer join synchronize the condition from left table to right #21161
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bakea
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Can one of the admins verify this patch? |
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I think it has fixed by SPARK-21479. |
zifeif2
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Nov 22, 2025
Closes apache#21766 Closes apache#21679 Closes apache#21161 Closes apache#20846 Closes apache#19434 Closes apache#18080 Closes apache#17648 Closes apache#17169 Add: Closes apache#22813 Closes apache#21994 Closes apache#22005 Closes apache#22463 Add: Closes apache#15899 Add: Closes apache#22539 Closes apache#21868 Closes apache#21514 Closes apache#21402 Closes apache#21322 Closes apache#21257 Closes apache#20163 Closes apache#19691 Closes apache#18697 Closes apache#18636 Closes apache#17176 Closes apache#23001 from wangyum/CloseStalePRs. Authored-by: Yuming Wang <[email protected]> Signed-off-by: hyukjinkwon <[email protected]>
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What changes were proposed in this pull request?
JIRA Issue:https://issues.apache.org/jira/browse/SPARK-21645
Change the optimize rule of leftouter join, if the filter column is contained in join column, the can synchronize the filter from left to right, For example, left join sql:
Select * from a left outer join b on a.id=b.id where a.id=12345；
After join optimizer rule, the filter a.id = 12345 of table a should be synchronized to table b(b.id=12345)
How was this patch tested?
(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
To see the query plan by explain the sql like 'Select * from a left outer join b on a.id=b.id where a.id=12345', guarantee the filter a.id=12345 is synchronized to table b.