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* Create Index?
@ 1999-01-24 21:22 John Cusick <jcusick@exotrope.net>
0 siblings, 1 reply; 4+ messages in thread
From: John Cusick @ 1999-01-24 21:22 UTC (permalink / raw)
To: pgsql-sql; pgsql-general@postgresql.org
I've recently upgraded to version 6.4 which was compiled on RedHat Linux
ver 5.1
with no apparent problems.
and with a test table;
create table partref
(partnum varchar(15) not null, desc varchar(15), vnum varchar(60));
then;
create index indpart on partref (partnum);
returns;
ERROR: partind: cannot extend
This worked fine w/version6.3 on the same system.
I looked around in the changes and re-checked the man page.
Am I missing something way to obvious??
John Cusick
jcusick@exotrope.net
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: [SQL] Create Index?
@ 1999-01-24 21:59 Bruce Momjian <maillist@candle.pha.pa.us>
parent: John Cusick <jcusick@exotrope.net>
0 siblings, 0 replies; 4+ messages in thread
From: Bruce Momjian @ 1999-01-24 21:59 UTC (permalink / raw)
To: jcusick@exotrope.net; +Cc: pgsql-sql; pgsql-general@postgreSQL.org
> create index indpart on partref (partnum);
>
> returns;
>
> ERROR: partind: cannot extend
>
>
> This worked fine w/version6.3 on the same system.
>
> I looked around in the changes and re-checked the man page.
> Am I missing something way to obvious??
You have run out of disk space.
--
Bruce Momjian | http://www.op.net/~candle
maillist@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
^ permalink raw reply [nested|flat] 4+ messages in thread
* create index
@ 2002-11-19 06:44 ernest_it@hotmail.com <ernest_it@hotmail.com>
0 siblings, 1 reply; 4+ messages in thread
From: ernest_it@hotmail.com @ 2002-11-19 06:44 UTC (permalink / raw)
To: pgsql-sql
i don't know how to create the index about the following statement.
SELECT b.screen_id AS screen_id, b.name AS screen_name
FROM tbl_showlog AS a CROSS JOIN
tbl_screen AS b CROSS JOIN
tbl_company AS c
WHERE a.screen_id = b.screen_id
AND b.company_id = c.company_id
AND c.company_id = 1
AND c.is_active = 1
GROUP BY b.screen_id, b.name
ORDER BY b.screen_id
many thx!
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: create index
@ 2002-11-19 14:13 Tomasz Myrta <jasiek@klaster.net>
parent: ernest_it@hotmail.com <ernest_it@hotmail.com>
0 siblings, 0 replies; 4+ messages in thread
From: Tomasz Myrta @ 2002-11-19 14:13 UTC (permalink / raw)
To: ernest_it@hotmail.com <ernest_it@hotmail.com>; +Cc: pgsql-sql
Uz.ytkownik ernest_it@hotmail.com napisa?:
> i don't know how to create the index about the following statement.
>
>
> SELECT b.screen_id AS screen_id, b.name AS screen_name
> FROM tbl_showlog AS a CROSS JOIN
> tbl_screen AS b CROSS JOIN
> tbl_company AS c
> WHERE a.screen_id = b.screen_id
> AND b.company_id = c.company_id
> AND c.company_id = 1
> AND c.is_active = 1
> GROUP BY b.screen_id, b.name
> ORDER BY b.screen_id
Change your query to explicit joins. It looks much better and explains
directly your problem.
Example:
SELECT screen_id, B.name as screen_name
FROM
tbl_company C
join tbl_screen B using (company_id)
join tbl_showlog A using (screen_id)
WHERE
company_id=1 and is_active=1
I don't know how many records do you have, but try to create indexes:
1. tbl_company -> company_id
2. tbl_screen -> company_id
3. tbl_showlog -> screen_id
Regards,
Tomasz Myrta
^ permalink raw reply [nested|flat] 4+ messages in thread
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-- links below jump to the message on this page --
1999-01-24 21:22 Create Index? John Cusick <jcusick@exotrope.net>
1999-01-24 21:59 ` Bruce Momjian <maillist@candle.pha.pa.us>
2002-11-19 06:44 create index ernest_it@hotmail.com <ernest_it@hotmail.com>
2002-11-19 14:13 ` Re: create index Tomasz Myrta <jasiek@klaster.net>
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