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Re: Joins and full index scans...mysql vs postgres?

From: "ryan groth" <postgres(at)cpusoftware(dot)com>
To: "Steinar H(dot) Gunderson" <sgunderson(at)bigfoot(dot)com>,pgsql-performance(at)postgresql(dot)org
Subject: Re: Joins and full index scans...mysql vs postgres?
Date: 2006-02-22 18:11:13
Message-ID: E1FBySH-0005Rw-1H@zeus.liquidweb.com (view raw or flat)
Thread:
Lists: pgsql-performance
Does this work:

"Merge Left Join  (cost=0.00..2656.36 rows=6528 width=1522) (actual
time=0.057..123.659 rows=6528 loops=1)"
"  Merge Cond: ("outer".uid = "inner".uid)"
"  ->  Merge Left Join  (cost=0.00..1693.09 rows=6528 width=1264)
(actual time=0.030..58.876 rows=6528 loops=1)"
"        Merge Cond: ("outer".uid = "inner".user_id)"
"        ->  Index Scan using users_pkey on users  (cost=0.00..763.81
rows=6528 width=100) (actual time=0.016..9.446 rows=6528 loops=1)"
"        ->  Index Scan using phorum_users_base_pkey on
phorum_users_base  (cost=0.00..822.92 rows=9902 width=1168) (actual
time=0.007..15.674 rows=9845 loops=1)"
"  ->  Index Scan using useraux_pkey on useraux  (cost=0.00..846.40
rows=7582 width=262) (actual time=0.007..11.935 rows=7529 loops=1)"
"Total runtime: 127.442 ms"


> On Wed, Feb 22, 2006 at 12:26:47PM -0500, ryan groth wrote:
> > Postgres Explain 
> 
> We need to see EXPLAIN ANALYZE results here.
> 
> What's your work_mem set to?
> 
> /* Steinar */
> -- 
> Homepage: http://www.sesse.net/
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 3: Have you checked our extensive FAQ?
> 
>                http://www.postgresql.org/docs/faq
> 
> 

-- 


> On Wed, Feb 22, 2006 at 12:26:47PM -0500, ryan groth wrote:
> > Postgres Explain 
> 
> We need to see EXPLAIN ANALYZE results here.
> 
> What's your work_mem set to?
> 
> /* Steinar */
> -- 
> Homepage: http://www.sesse.net/
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 3: Have you checked our extensive FAQ?
> 
>                http://www.postgresql.org/docs/faq
> 
> 

-- 


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Next:From: ryan grothDate: 2006-02-22 18:21:04
Subject: Re: Joins and full index scans...mysql vs postgres?
Previous:From: Steinar H. GundersonDate: 2006-02-22 17:52:44
Subject: Re: Joins and full index scans...mysql vs postgres?

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