tanelk commented on a change in pull request #28642:
URL: https://github.com/apache/spark/pull/28642#discussion_r735412472
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -1102,30 +1103,43 @@ object InferFiltersFromConstraints extends
Rule[LogicalPlan]
filter
}
- case join @ Join(left, right, joinType, conditionOpt, _) =>
- joinType match {
- // For inner join, we can infer additional filters for both sides.
LeftSemi is kind of an
- // inner join, it just drops the right side in the final output.
- case _: InnerLike | LeftSemi =>
- val allConstraints = getAllConstraints(left, right, conditionOpt)
- val newLeft = inferNewFilter(left, allConstraints)
- val newRight = inferNewFilter(right, allConstraints)
- join.copy(left = newLeft, right = newRight)
+ case join @ ExtractEquiJoinKeys(_, leftKeys, rightKeys, _, _, _, _) =>
Review comment:
`ExtractEquiJoinKeys` extracts keys, that are compared with
`EqualNullSafe` - we should not infer `IsNotNull` for those.
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