[nycphp-talk] SQL question - summary data for two categories
Daniel Convissor
danielc at analysisandsolutions.com
Mon Aug 2 19:18:59 EDT 2004
On Mon, Aug 02, 2004 at 07:17:46AM -0400, Michael Myers wrote:
> I have a primary data table that holds the same type of results for two
> different categories. There is a column in the table that reflects the
> category for each row.
Good job.
> Up to this point, I have been creating two separate summary tables, one
> for each category.
Ouch. Glad you've seen the light of merging them into one table.
> Is it possible to combine them in one CREATE...SELECT construct?
Not really, that I know of. For ease of long term maintenance,
comprehension and accuracy in choosing column types, do your self a
favor: make one file that just has a CREATE TABLE statement. Don't
have it do a create select.
Then create separate SELECT INTO statements to move the data from the
different tables into the new centralized table.
--Dan
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