SELECT TAKES A LOOOONG TIME - Mailing list pgsql-hackers

From Maksim Likharev
Subject SELECT TAKES A LOOOONG TIME
Date
Msg-id 56510AAEF435D240958D1CE8C6B1770A016D2D35@mailc03.aurigin.com
Whole thread Raw
Responses Re: SELECT TAKES A LOOOONG TIME  (pgsql@mohawksoft.com)
List pgsql-hackers
Hi,
could somebody explain me please why following select
SELECT docid FROM prod.guids GROUP BY docid HAVING( COUNT(docid) > 1 )

taking 15 min on 2 Proc Box on 1M rows, where number of duplicates
around 300K,
and docid indexed and not null and char(16).

May be I am doing something wrong?
Thank you.


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