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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Vladimir Nicolici <vladnc@gmail.com>
Cc: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Re: Re: SQL error: function round(double precision, integer) does not exist
Date: Thu, 25 May 2017 14:22:37 -0400
Message-ID: <16285.1495736557@sss.pgh.pa.us> (raw)
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Vladimir Nicolici <vladnc@gmail.com> writes:
> I do that, but itÂ’s extremely annoying.

Well, if it rises to the level of extreme annoyance for you, there
is a simple solution:

create function round(float8, int) returns numeric as
'select round($1::numeric, $2)' language sql;

> Furthermore, since the single parameter version accepts double precision numbers, the imprecise representation excuse seems questionable at best.

The single-parameter version always rounds to integer, which avoids the
problem of not being able to represent decimal fractions exactly.

			regards, tom lane


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