Re: Simple but slow

RE: [NOVICE] Simple but slowWOW! Thats a great query.

It brought down the access time from 121 secs to about 4.

Thanks a ton
Chad
----- Original Message -----
From: Henshall, Stuart - WCP
To: 'Chad Thompson' ; josh(at)agliodbs(dot)com ; pgsql-novice
Sent: Thursday, August 22, 2002 7:59 AM
Subject: RE: [NOVICE] Simple but slow

> -----Original Message-----
> From: Chad Thompson [mailto:chad(at)weblinkservices(dot)com]
>
> select l.id, l.full_phone into "8_21_2002"
> from "temp_list_tier" l LEFT JOIN
> (select phonenum
> from call_results_fixed
> where client_id = 8) as cr
> ON l.full_phone = cr.phonenum
> where cr.phonenum Is Null
>
I'm guessing you want all those in "temp_list_tier" where there is not the same phone number in call_results_fixed.
Does this (untested) run better for you:

SELECT l.id,l.full_phone INTO "8_21_2002"
FROM "temp_list_tier" AS l WHERE
WHERE NOT EXISTS
(SELECT * FROM call_results_fixed AS cr
WHERE cr.client_id=8 AND l.full_phone=cr.phonenum);

Indexes needed (I think):
cr.client_id
cr.phonenum
Maybe (I don't think so):
l.full_phone

Not sure if this is what you wanted but hope its helpfull,
- Stuart