Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/21049
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Github user henryr commented on a diff in the pull request:
https://github.com/apache/spark/pull/21049#discussion_r181839715
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -307,6 +309,32 @@ object RemoveRedundantProject
Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21049#discussion_r181803393
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -307,6 +309,32 @@ object RemoveRedundantProject
Github user henryr commented on a diff in the pull request:
https://github.com/apache/spark/pull/21049#discussion_r180964957
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -307,6 +309,32 @@ object RemoveRedundantProject
Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21049#discussion_r180963692
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -307,6 +309,32 @@ object RemoveRedundantProject
GitHub user henryr opened a pull request:
https://github.com/apache/spark/pull/21049
[SPARK-23957][SQL] Remove redundant sort operators from subqueries
## What changes were proposed in this pull request?
Subqueries (at least in SQL) have 'bag of tuples' semantics. Ordering
