-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of novice
Sent: Wednesday, 8 August 2007 15:31
To: pgsql-sql@postgresql.org
Subject: [SQL] populate value of column
> How can I generate the following result?
>
> meter_id | bay
> ----------+------------
> 1001 | 01
> 1001 | 02
> 1001 | 03
> 1001 | 04
> 1012 | 01
> 1012 | 02
> 1012 | 03
> 1012 | 04
> 1012 | 05
> 1012 | 06
I even tested this one too ;)
SELECT meter_id,
LPAD(GENERATE_SERIES(1,area_no),2,'0')
FROM meter;
Works on 8.2.4 - you didn't say what version you were using.
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
