Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/543#issuecomment-94327920
Maybe there are some misunderstandings. I'm not disagreeing on this patch,
but need a reference that explains this rule more detailed.
How did you figure out that this rule is applied to only order-by clauses?
If you just run several queries on pgsql, it is insufficient.
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