[SPARK-26078][SQL] Dedup self-join attributes on IN subqueries#23057
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mgaido91 wants to merge 10 commits into
Closed
[SPARK-26078][SQL] Dedup self-join attributes on IN subqueries#23057mgaido91 wants to merge 10 commits into
mgaido91 wants to merge 10 commits into
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What changes were proposed in this pull request?
When there is a self-join as result of a IN subquery, the join condition may be invalid, resulting in trivially true predicates and return wrong results.
The PR deduplicates the subquery output in order to avoid the issue.
How was this patch tested?
added UT