Re: [SQL] add a check constraint to an existing column

A copy of this was sent to Alain Kreienbuhl <akreienb_at_fisystem.fr> (if that email address didn't require changing) On Thu, 06 Jan 2000 13:07:12 +0100, you wrote:

>Hello,
>
>How do yo add a "check constraint" on a colomn of a existing table ?
>
>Thanks for your help.
>
>Alain.
>
>PS: Happy New Year

  1* alter table emp add constraint empno_gt_zero check (empno > 0) tkyte_at_8i> /

Table altered.

--
See http://osi.oracle.com/~tkyte/ for my columns 'Digging-in to Oracle8i'... Current article is "Part I of V, Autonomous Transactions" updated June 21'st  

Thomas Kyte                   tkyte_at_us.oracle.com
Oracle Service Industries     Reston, VA   USA

Opinions are mine and do not necessarily reflect those of Oracle Corporation Received on Thu Jan 06 2000 - 06:54:37 CST