Re: CHAR(n) always trims trailing spaces in 7.4

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: elein <elein(at)varlena(dot)com>, "news(dot)postgresql(dot)org" <jlim(at)natsoft(dot)com(dot)my>, <pgsql-sql(at)postgresql(dot)org>
Subject: Re: CHAR(n) always trims trailing spaces in 7.4
Date: 2004-02-18 00:07:24
Message-ID: Pine.LNX.4.33.0402171706530.31955-100000@css120.ihs.com
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On Tue, 17 Feb 2004, Tom Lane wrote:

> elein <elein(at)varlena(dot)com> writes:
> > This is an example of the problem. It used to expand
> > the middle thing to 15.
>
> > elein=# select 'x' || ' '::char(15) || 'x';
> > ?column?
> > ----------
> > xx
> > (1 row)
>
> Still does, but then the spaces go away again when the value goes into
> the concatenation, because concatenation is a text operator.

But then this:

select 'x'||' '||'x'

should produce xx, but it produces x x.

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