spark-instrumented-optimizer/sql/catalyst
Nattavut Sutyanyong bd85603ba5 [SPARK-17348][SQL] Incorrect results from subquery transformation
## What changes were proposed in this pull request?

Return an Analysis exception when there is a correlated non-equality predicate in a subquery and the correlated column from the outer reference is not from the immediate parent operator of the subquery. This PR prevents incorrect results from subquery transformation in such case.

Test cases, both positive and negative tests, are added.

## How was this patch tested?

sql/test, catalyst/test, hive/test, and scenarios that will produce incorrect results without this PR and product correct results when subquery transformation does happen.

Author: Nattavut Sutyanyong <nsy.can@gmail.com>

Closes #15763 from nsyca/spark-17348.
2016-11-14 20:59:15 +01:00
..
src [SPARK-17348][SQL] Incorrect results from subquery transformation 2016-11-14 20:59:15 +01:00
pom.xml [SPARK-16535][BUILD] In pom.xml, remove groupId which is redundant definition and inherited from the parent 2016-07-19 11:59:46 +01:00