| From: | elein <elein(at)varlena(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | elein <elein(at)varlena(dot)com>, "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(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 20:05:47 |
| Message-ID: | 20040218120547.J25537@cookie.varlena.com |
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| Lists: | pgsql-hackers pgsql-sql |
So exactly what is the order of casts that produces
different results with:
'x' || ' ' || 'x' and 'x' || ' '::char15 || 'x'
Are operators being invoked both (text,text)?
I'm trying to understand the precedence that causes
the different results.
elein
On Tue, Feb 17, 2004 at 10:53:17PM -0500, Tom Lane wrote:
> elein <elein(at)varlena(dot)com> writes:
> > Apparently the ::char is cast to varchar and then text?
>
> No, directly to text, because the || operator is defined as taking text
> inputs. But there's no practical difference between text and varchar on
> this point.
>
> regards, tom lane
>
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