Re: aggregation of setof

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andreas Gaab <A(dot)Gaab(at)scanlab(dot)de>
Cc: "pgsql-sql(at)postgresql(dot)org" <pgsql-sql(at)postgresql(dot)org>
Subject: Re: aggregation of setof
Date: 2011-01-31 15:32:03
Message-ID: 16976.1296487923@sss.pgh.pa.us
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Andreas Gaab <A(dot)Gaab(at)scanlab(dot)de> writes:
> Could not the function regexp_matches(text, text) be defined to only return a text[] not a setof text[]?

It'd be pretty hard to change at this point, because of
backwards-compatibility considerations, and because the two functions
share a single implementation.

regards, tom lane

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