[SPARK-29606][SQL] Improve EliminateOuterJoin performance#26257

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Commits on Oct 25, 2019

Improve EliminateOuterJoin performance
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Commits on Nov 15, 2019

Try 2
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Commits on Nov 16, 2019

Avoid generating too many constraints
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Commits on Feb 29, 2020

Merge remote-tracking branch 'upstream/master' into SPARK-29606
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case e @ EqualNullSafe(l, _: AttributeReference) if l.references.size > 1 => e
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Commits on May 2, 2020