> select 'x'||' '||'x'
>
> should produce xx, but it produces x x.
>
INCORRECT
This
select 'x'||' '::char ||'x'
Should produce xx
This
select 'x'||' '||'x'
is restateable as select 'x'|| ' '::text ||'x'
And the || operand for text is not dropping the extra spaces hence correctly
x x
Terry Fielder
Manager Software Development and Deployment
Great Gulf Homes / Ashton Woods Homes
terry@greatgulfhomes.com
Fax: (416) 441-9085
> -----Original Message-----
> From: pgsql-sql-owner@postgresql.org
> [mailto:pgsql-sql-owner@postgresql.org]On Behalf Of scott.marlowe
> Sent: Tuesday, February 17, 2004 7:07 PM
> To: Tom Lane
> Cc: elein; news.postgresql.org; pgsql-sql@postgresql.org
> Subject: Re: [SQL] CHAR(n) always trims trailing spaces in 7.4
>
>
> On Tue, 17 Feb 2004, Tom Lane wrote:
>
> > elein <elein@varlena.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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