Re: More then 1600 columns? - Mailing list pgsql-general

From Mark Mitchell
Subject Re: More then 1600 columns?
Date
Msg-id c3a5a583-17b8-42f8-b585-e6bbcd0f82b3@riccagroup.com
Whole thread Raw
In response to Re: More then 1600 columns?  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: More then 1600 columns?  (Rob Sargent <robjsargent@gmail.com>)
Re: More then 1600 columns?  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: More then 1600 columns?  ("Clark C. Evans" <cce@clarkevans.com>)
List pgsql-general
Yes I understand that this is "bad design" but what we are doing is storing each form field in a survey in its own
column.For very long surveys we end up with thousands of elements.  
I know storing in an array is possible but it makes it so much easier to query the data set when each element is in its
ownfield. I had lots of comments on why I should not do this and the possible alternatives and I thank everyone for
theirinput but no one answered the question about compiling with a higher block size to get more columns. Can anyone
answerthat? 

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Friday, November 12, 2010 12:24 AM
To: Mark Mitchell
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] More then 1600 columns?

"Mark Mitchell" <mmitchell@riccagroup.com> writes:
> Is there are hard limit of 1600 that you cannot get around?

Yes.

Generally, wanting more than a few dozen columns is a good sign that you
need to rethink your schema design.  What are you trying to accomplish
exactly?

            regards, tom lane


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