From: solarsail <solarsail@gmail.com>
To: pgsql-sql@postgresql.org
Subject: using pg_tables and tablename in queries
Date: Tue, 4 Oct 2005 12:30:55 -0400
Message-ID: <aa44f4a30510040930m510bbe8do4babd97b1b37c90d@mail.gmail.com> (raw)
I have a large number of tables with a common naming convention
mytable001, mytable002, mytable003 ... mytable00n
I would like to do a query across all of the tables, however I do not know
all of the tables before hand, and I do not want to ( cant ) manually
generate a query like
select * from mytable001, mytable002, mytable003
I have a query that returns the names of the tables I want to query:
select tablename from pg_tables where tablename like 'mytable%'
I have successfully done this query before. I remember it used a odd syntax;
I it was something like
select * from ( select tablename from pg_tables where tablename like
'mytable%' )
However the above query returns just a listing of tables, I need to use its
output in the FROM and treat the input as a table name.
( I've tried creating a Table Function that returns the above set and tried
to use that in a select clause, but I cant get it to work. )
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To: pgsql-sql@postgresql.org
Cc: solarsail@gmail.com
Subject: Re: using pg_tables and tablename in queries
In-Reply-To: <aa44f4a30510040930m510bbe8do4babd97b1b37c90d@mail.gmail.com>
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