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Re: sum the text of a text field

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am  Wed, dem 29.10.2008, um 13:20:59 +0200 mailte Sim Zacks folgendes:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Is there any way (aside from creating a new aggregate type) to sum the
> text in a text field. I would like to group on a query and concatenate
> all the values of a specific field in the result set.

Do you want to concat all rows to a string?

,----[  Column to string with delimiter, David Fetter  ]
| test=*# select * from w;
|    t
| --------
|  test
|  foo
|  bar
|  foobar
| (4 rows)
|
| test=*# SELECT array_to_string(ARRAY(SELECT t FROM w), ',');
|    array_to_string
| ---------------------
|  test,foo,bar,foobar
| (1 row)
`----



HTH, Andreas
-- 
Andreas Kretschmer
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