Re: Partition-wise aggregation/grouping

From: legrand legrand <legrand_legrand(at)hotmail(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Partition-wise aggregation/grouping
Date: 2017-12-08 22:55:53
Message-ID: 1512773753804-0.post@n3.nabble.com
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Thank you for the answer
This is a miss understanding of hash join behaviour on my side.

That means that there is at less on line read in facts_p2 part even if the
second table partition of the hash join operation is empty.

I will remember it now ;o)

Regards
PAscal

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