Re: CHAR(n) always trims trailing spaces in 7.4 - Mailing list pgsql-sql

From elein
Subject Re: CHAR(n) always trims trailing spaces in 7.4
Date
Msg-id 20040217155611.G25537@cookie.varlena.com
Whole thread Raw
In response to Re: CHAR(n) always trims trailing spaces in 7.4  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-sql
So the problem is there. But blaming it on char was wrong.
It should be blamed on the varchar change.  Hey, I thought
the truncation was for varchar and not text? It was for both?

It would be semantically tricky to change the operator.
The precendence is to convert to text.  Now with
the implicit update of the char(n) to text for the operator
"corrupts" the char() value.

elein

On Tue, Feb 17, 2004 at 06:40:49PM -0500, 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.
> 
>             regards, tom lane
> 
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