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Enhance optimization of rule to convert outerjoin to antijoin #75

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jiangzhe opened this issue Mar 4, 2022 · 0 comments

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feature

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jiangzhe commented Mar 4, 2022

SELECT c1 FROM t1
LEFT JOIN t2
ON t1.c1 = t2.c2
WHERE t2.c2 IS NULL

Above SQL uses LeftJoin to achieve the AntiJoin Semantics.
We remove the WHERE clause and convert it to AntiJoin.

jiangzhe added the feature label

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