From: | "C G" <csgcsg39(at)hotmail(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Information about a column |
Date: | 2004-03-04 14:46:53 |
Message-ID: | BAY15-F28jTr8e3XRds0004da4c@hotmail.com |
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Thread: | |
Lists: | pgsql-general |
Dear All,
I have column that contains couple of million rows of information and I was
wondering what is the standard way of keeping 'summary information' about
the column.
For instance, say each row has a number between 1 - 10 and a regular query
is "How many of the rows have numbers about 5.
I can see three ways of doing this:
1. Just query the table every time you want the information
2. Create a view for the information required
3. Create another table with a counter column, i.e. every time a number goes
in that is above 5, the counter increates by 1.
Thanks
Colin
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