Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/434#issuecomment-84623003
@dongjoon-hyun, thanks for your nice work.
In overall, the patch looks good, but I want to check my understanding.
If the ```WHERE``` clause involves only a subset of partition columns, it
seems that every partition directory which are not specified in the ```where```
clause will be read.
Please correct me if I misunderstand something.
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