From: | Joe Conway <mail(at)joeconway(dot)com> |
---|---|
To: | Rob Richardson <RDRichardson(at)rad-con(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: How can I correctly handle sparse crosstabs? |
Date: | 2014-02-26 16:16:30 |
Message-ID: | 530E135E.5060109@joeconway.com |
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Lists: | pgsql-general |
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On 02/26/2014 07:56 AM, Rob Richardson wrote:
> It seems that crosstab queries assume there is going to be a value
> for every possible row in the source query. That?s not what I
> have, and I am not getting the result I need.
<snip>
> There is no relation between the value in the column and the tag
> name the value was associated with in the source table. How can I
> enforce that relationship in a crosstab? Or am I plain out of
> luck?
Please see:
http://www.postgresql.org/docs/9.3/interactive/tablefunc.html
In particular the examples about 2/3rds down the page.
HTH,
Joe
- --
Joe Conway
credativ LLC: http://www.credativ.us
Linux, PostgreSQL, and general Open Source
Training, Service, Consulting, & 24x7 Support
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