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* how do I to generate a sequence Range or Set of integer constants
@ 2007-02-23 18:25 Stefan Becker <pgsql@yukonho.de>
0 siblings, 3 replies; 4+ messages in thread
From: Stefan Becker @ 2007-02-23 18:25 UTC (permalink / raw)
To: pgsql-sql
dear SQL friends,
What I want to do might be done differantly. Right now I can't
think of another solution other than a select statement
I would like to create a sequence range of integer constants. Join
this sequence against a ID Range in a database and look for missing
Id's.
Another application for this would be to simply populate a database with
say 1000..9999 Records....
Now: Is there a syntax that allows for the following.....
create table XX (id int);
insert into XX (select xx from "1 to 1000" of integers)
or...
select IntSeq.MissingValues, x.UniqIntId,x.A,x.B,x.C,
from MyDataTable x
left outer join
(
select MissingValues from "1 to 1000" of integers
) IntSeq on MissingValues=x.UniqIntId
I'm hoping that someone has done this and might be able to
point to some function or methode to do this
Thanks,
Stefan Becker
--
email: stefan@yukonho.de
tel : +49 (0)6232-497631
http://www.yukonho.de
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: how do I to generate a sequence Range or Set of integer constants
@ 2007-02-23 19:31 A. Kretschmer <andreas.kretschmer@schollglas.com>
parent: Stefan Becker <pgsql@yukonho.de>
2 siblings, 0 replies; 4+ messages in thread
From: A. Kretschmer @ 2007-02-23 19:31 UTC (permalink / raw)
To: pgsql-sql
am Fri, dem 23.02.2007, um 19:25:35 +0100 mailte Stefan Becker folgendes:
> Now: Is there a syntax that allows for the following.....
>
> create table XX (id int);
> insert into XX (select xx from "1 to 1000" of integers)
Perhaps you are searching for generate_series():
test=*# select generate_series(1,10);
generate_series
-----------------
1
2
3
4
5
6
7
8
9
10
(10 rows)
Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: how do I to generate a sequence Range or Set of integer constants
@ 2007-02-23 19:32 Scott Marlowe <smarlowe@g2switchworks.com>
parent: Stefan Becker <pgsql@yukonho.de>
2 siblings, 0 replies; 4+ messages in thread
From: Scott Marlowe @ 2007-02-23 19:32 UTC (permalink / raw)
To: Stefan Becker <pgsql@yukonho.de>; +Cc: pgsql-sql
On Fri, 2007-02-23 at 12:25, Stefan Becker wrote:
> dear SQL friends,
>
> What I want to do might be done differantly. Right now I can't
> think of another solution other than a select statement
>
> I would like to create a sequence range of integer constants. Join
> this sequence against a ID Range in a database and look for missing
> Id's.
>
> Another application for this would be to simply populate a database with
> say 1000..9999 Records....
>
> Now: Is there a syntax that allows for the following.....
>
> create table XX (id int);
> insert into XX (select xx from "1 to 1000" of integers)
>
> or...
>
> select IntSeq.MissingValues, x.UniqIntId,x.A,x.B,x.C,
> from MyDataTable x
> left outer join
> (
> select MissingValues from "1 to 1000" of integers
> ) IntSeq on MissingValues=x.UniqIntId
select * from generate_series(1,1000);
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: how do I to generate a sequence Range or Set of integer constants
@ 2007-02-23 19:36 Joe <dev@freedomcircle.net>
parent: Stefan Becker <pgsql@yukonho.de>
2 siblings, 0 replies; 4+ messages in thread
From: Joe @ 2007-02-23 19:36 UTC (permalink / raw)
To: Stefan Becker <pgsql@yukonho.de>; +Cc: pgsql-sql
On Fri, 2007-02-23 at 19:25 +0100, Stefan Becker wrote:
> dear SQL friends,
>
> What I want to do might be done differantly. Right now I can't
> think of another solution other than a select statement
>
> I would like to create a sequence range of integer constants. Join
> this sequence against a ID Range in a database and look for missing
> Id's.
>
> Another application for this would be to simply populate a database with
> say 1000..9999 Records....
>
> Now: Is there a syntax that allows for the following.....
>
> create table XX (id int);
> insert into XX (select xx from "1 to 1000" of integers)
>
> or...
>
> select IntSeq.MissingValues, x.UniqIntId,x.A,x.B,x.C,
> from MyDataTable x
> left outer join
> (
> select MissingValues from "1 to 1000" of integers
> ) IntSeq on MissingValues=x.UniqIntId
>
>
> I'm hoping that someone has done this and might be able to
> point to some function or methode to do this
Maybe something like this will help:
SELECT id
FROM generate_series(1, (SELECT last_value FROM id_seq)) AS s(id)
EXCEPT
SELECT UniqIntId FROM MyDataTable
ORDER BY id;
The id_seq is the sequence on your ID column, assuming it has one, or
you can replace the (SELECT ... FROM id_seq) by 1000.
Joe
^ permalink raw reply [nested|flat] 4+ messages in thread
end of thread, other threads:[~2007-02-23 19:36 UTC | newest]
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-- links below jump to the message on this page --
2007-02-23 18:25 how do I to generate a sequence Range or Set of integer constants Stefan Becker <pgsql@yukonho.de>
2007-02-23 19:31 ` A. Kretschmer <andreas.kretschmer@schollglas.com>
2007-02-23 19:32 ` Scott Marlowe <smarlowe@g2switchworks.com>
2007-02-23 19:36 ` Joe <dev@freedomcircle.net>
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