Re: Help with multistage query

----- Original Message -----
From: Russell Simpkins
To: pgsql-sql(at)postgresql(dot)org
Sent: Wednesday, September 07, 2005 4:05 PM
Subject: Re: [SQL] Help with multistage query

I have a perl script that issues a series of SQL statements to perform some queries. The script works, but I believe there must be a more elegant way to do this.

The simplified queries look like this:

SELECT id FROM t1 WHERE condition1; ;returns about 2k records which are stored in @idarray

foreach $id (@idarray) {

SELECT x FROM t2 WHERE id=$id; ; each select returns about 100 records which are saved in a perl variable

}

how about
select t1.id from t1, t2 where t1.id = t2.id and t2.id = x

or more correctly, based on the OP's example:

select t2.x from t1, t2 where t1.id = t2.id and t1.id = <condition>

--
Matt