Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21083#discussion_r182297617
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -661,21 +661,51 @@ object
Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21083#discussion_r182032397
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/QueryPlanConstraints.scala
---
@@ -54,13 +51,42 @@ trait
Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21083#discussion_r182034339
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -661,21 +661,51 @@ object
GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/21083
[SPARK-21479][SPARK-23564][SQL] infer additional filters from constraints
for join's children
## What changes were proposed in this pull request?
The existing query constraints
