From: | <terry(at)ashtonwoodshomes(dot)com> |
---|---|
To: | "'scott(dot)marlowe'" <scott(dot)marlowe(at)ihs(dot)com>, "'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 00:23:44 |
Message-ID: | 006f01c3f5b5$78932220$2766f30a@development.greatgulfhomes.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers pgsql-sql |
> 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(at)greatgulfhomes(dot)com
Fax: (416) 441-9085
> -----Original Message-----
> From: pgsql-sql-owner(at)postgresql(dot)org
> [mailto:pgsql-sql-owner(at)postgresql(dot)org]On Behalf Of scott.marlowe
> Sent: Tuesday, February 17, 2004 7:07 PM
> To: Tom Lane
> Cc: elein; news.postgresql.org; pgsql-sql(at)postgresql(dot)org
> Subject: Re: [SQL] CHAR(n) always trims trailing spaces in 7.4
>
>
> 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.
>
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2004-02-18 00:25:47 | Re: CHAR(n) always trims trailing spaces in 7.4 |
Previous Message | scott.marlowe | 2004-02-18 00:07:24 | Re: CHAR(n) always trims trailing spaces in 7.4 |
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2004-02-18 00:25:47 | Re: CHAR(n) always trims trailing spaces in 7.4 |
Previous Message | scott.marlowe | 2004-02-18 00:07:24 | Re: CHAR(n) always trims trailing spaces in 7.4 |