On Thu, Oct 09, 2003 at 14:28:57 -0500,
  Ron Johnson <[EMAIL PROTECTED]> wrote:
> 
> http://www.postgresql.org/docs/7.3/static/sql-createdomain.html
>   CREATE DOMAIN domainname [AS] data_type
>        [ DEFAULT default_expr ]
>        [ constraint [, ... ] ]
>    
>    where constraint is:
>    
>    [ CONSTRAINT constraint_name ]
>    { NOT NULL | NULL }
> 
> test1=# create domain d_tinyint as smallint constraint chk_tinyint CHECK (smallint 
> between 0 and 255);
> ERROR:  DefineDomain: CHECK Constraints not supported
> 
> So, how would I create a domain that limits a smallint?

You need to use 7.4. In 7.3 you couldn't use check constraints with domains.

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