From: | "Ross J(dot) Reedstrom" <reedstrm(at)rice(dot)edu> |
---|---|
To: | Samuel Gendler <sgendler(at)ideasculptor(dot)com> |
Cc: | Rob Sargent <robjsargent(at)gmail(dot)com>, Tripura <k_tripura(at)hotmail(dot)com>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Append n Rows into a Single Row |
Date: | 2011-06-20 17:05:57 |
Message-ID: | 20110620170557.GC16364@rice.edu |
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Lists: | pgsql-sql |
On Sat, Jun 18, 2011 at 08:51:55PM -0700, Samuel Gendler wrote:
> Actually, you need the array_agg() function to aggregate multiple rows into
> a single array, and that is discussed on the aggregate functions page,
> here: http://www.postgresql.org/docs/9.0/static/functions-aggregate.html
>
> You could then use one of the other array functions to manipulate that
> array.
>
> But given that you are appending strings to each other in your example, you
> can also just use the string_agg function from that same page - assuming you
> are on 9.0. It looks like that function isn't available before 9.0
>
Nice blog post about this here:
http://www.postgresonline.com/journal/archives/191-stringagg.html
Ross
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