[where's the documentation] subselect to a string

Hiya,

Bit of a basic question.

I has asked about a year ago about how to deal with data from a
subselect, and was regaled with tales of the wondrous new
functionality of the release known as "8".

Okay. Got that version. (Better late than never.)

Now I need to (sub) select an arbitrary number of string values and
return them as a single string value. Can't simply concatenate, 'cuz
of the arbitrariness.

Where is the documentation for what I need? I'm just not finding it
on the site or through Google. Is it under "cast" or something else?

And I'm getting some errors on the site in general. Searching for
"subselect string" gives me this one link, which gives me a broken page...
<http://techdocs.postgresql.org/guides/SetReturningFunctions>

Thanks for any pointers...

-Ben

Ben Riddell
Developer
Media Net Link
ben at thewhitebear dot com

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