Re: Bug in concat operator for Char? -- More Info

From: Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: josh(at)agliodbs(dot)com, pgsql-bugs(at)postgresql(dot)org, glenniii(at)mail(dot)utexas(dot)edu
Subject: Re: Bug in concat operator for Char? -- More Info
Date: 2004-07-21 15:00:50
Message-ID: 20040721075621.T61440@megazone.bigpanda.com
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On Wed, 21 Jul 2004, Tom Lane wrote:

> Josh Berkus <josh(at)agliodbs(dot)com> writes:
> > Are these changes intentional,
>
> Yes. We've been moving more and more steadily towards the notion that
> trailing spaces in char(n) values are insignificant noise. If you think
> that trailing spaces are significant, you shouldn't be using char(n)
> to store them.

Well, the problem here is that technically we're returning the wrong type.
We should be returning a char(l1+l2) rather than a text for a char
concatenate, but similarly to the recent complaint about numerics, we
don't really have a fully proper way to do that and it seems non-trivial.

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