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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Raj Gandhi <raj01gandhi@gmail.com>
Cc: David Johnston <david.g.johnston@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: format() function with string_agg
Date: Wed, 24 Sep 2014 11:35:04 -0400
Message-ID: <17457.1411572904@sss.pgh.pa.us> (raw)
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Raj Gandhi <raj01gandhi@gmail.com> writes:
> SQL with VARIADIC also gives the same error in 9.1:
> select format('%s %s', VARIADIC array_agg(val))
> from (values ('1'),('2')) src (val)
> ==
> ERROR:  too few arguments for format

You need 9.3 or later for that to work.  Per the 9.3 release notes:

    * Allow concat() and format() to properly expand VARIADIC-labeled arguments (Pavel Stehule)

			regards, tom lane


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