From: | Erik Jones <erik(at)myemma(dot)com> |
---|---|
To: | pgsql-sql <pgsql-sql(at)postgresql(dot)org> |
Subject: | Rule rewrite to possible union? |
Date: | 2007-12-06 22:03:22 |
Message-ID: | CD8629AA-978A-4DC0-946F-5AF3451CADC1@myemma.com |
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Lists: | pgsql-sql |
Here's what I'd like to happen, but I'm not seeing how it can be done.
Say we have this simple table:
CREATE TABLE foo (
id integer,
foo varchar
);
and then many tables along these lines:
CREATE TABLE ud1_foo (LIKE foo);
CREATE TABLE ud2_foo (LIKE foo);
What I'd like is to do is select against foo and if there is an id in
the where clause equal to 1 or 2 add a union with the appropriate
table. I could easily do this at the application level, but this is
for a migration (the ud tables are going away) and I'd like to
minimize the number of transient application code changes wherever
possible. Is there any way I can make this happen?
Erik Jones
Software Developer | Emma®
erik(at)myemma(dot)com
800.595.4401 or 615.292.5888
615.292.0777 (fax)
Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com
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