Re:

On Mon, 24 Sep 2001, Ana Claudia wrote:

> Hello,
>
> Usually, I use Oracle for develop database application. However, I
> change my computer to Linux system (Mandrake 8) and I decide change database
> to Postgresql.
> In Oracle when I create a table where a colum is a char(n) or varchar(n), if
> I try to insert in this table value bigger than n , I get an error. That
> doesn't happen in Postgresql, if I try to insert a value bigger than n, it's
> accept because trunk the value. I don't want that, if the value is bigger I
> want an error. I created a check constraint with the function [char_length
> (parameter) < (n+1)] but still not working. Can you help me to resolve this
> problem? The version of Postgresql that I have is 7.1.2.

I believe this will be fixed in the upcoming 7.2 release.  The reason the
constraint doesn't work is probably that the truncation happens before the
check.