"David E. Wheeler" <david(at)kineticode(dot)com> writes:
> Because it's an aggregate that cocatenates values. It's not an
> aggregate that lists things. I also like concat_agg better than
> string_agg because it's not limited to acting on strings.
But what it *produces* is a string. For comparison, the
SQL-standard-specified array_agg produces arrays, but what it
acts on isn't an array.
regards, tom lane
In response to
pgsql-hackers by date
|Next:||From: Kevin Grittner||Date: 2010-01-26 17:39:19|
|Subject: Re: testing cvs HEAD - HS/SR - missing file|
|Previous:||From: Tom Lane||Date: 2010-01-26 17:29:35|
|Subject: Re: ECPGset_var |