> -----Original Message-----
> From: Tom Lane [mailto:[EMAIL PROTECTED]
> Sent: Thursday, October 20, 2005 2:54 PM
> To: Dann Corbit
> Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; pgsql-
> [EMAIL PROTECTED]
> Subject: Re: [GENERAL] [HACKERS] 'a' == 'a '
>
> "Dann Corbit" <[EMAIL PROTECTED]> writes:
> > I guess that additional ambiguity arises if you add additional
spaces to
> > the end. Many database systems solve this by trimming the
characters
> > from the end of the string upon storage and the returned string will
not
> > have any trailing blanks.
>
> Can you document that? ISTM that that would effectively make char(n)
> and varchar(n) exactly equivalent, which is ... um ... a bit stupid.
This is SQL*Server:
drop table test_char
go
create table test_char(
fixed_30 char(30),
varch_30 varchar(30),
nchar_30 nchar(30),
nvarc_30 nvarchar(30)
)
go
insert into test_char values('Dann ', 'Dann ', 'Dann ', 'Dann ')
go
select len(fixed_30), len(varch_30), len(nchar_30), len(nvarc_30)
from test_char
go
Result set:
4 4 4 4
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