Re: Problem with view
Jan Wieck <wieck@debis.com>
From: wieck@debis.com (Jan Wieck)
To: Wenjin Zheng <wenjin.zheng@lsbc.com>
Cc: pgsql-hackers@postgresql.org
Date: 2000-04-03T21:10:36Z
Lists: pgsql-hackers
> I have got another problem. I have a table(table tempOne) that has two
> fields, seqid(int) and phredscore(int). They are one to many relationship,
> e.g. one seqid has many phredscore. I would like to get the row that has
> the max(phredscore). So I first created a view as follow:
> "create view maxphred as select seqid, max(phredscore) as phredscore from
> tempOne group by seqid;"
Views are known to have severe problems with aggregates and
grouping. And once again these are problems we want to
tackle with the parse-/querytree overhaul.
Oh man - this is one of the most important things I see.
Jan
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