Re: How can I Delete/Alter Unique Constraint

On Thu, 29 Aug 2002, shreedhar wrote:

> Hi All,
>
> How can I delete Unique Constraint/ Alter Unique Constraint.
>
> example
>
> tblStudent
> =======
> stdid
> stdname
> classid
>
> previously I gave stdname as UNIQUE
> but I need to alter it as UNIQUE (stdname,classid)
>

It is this way. Try
$ drop index stdname_index_name;
DROP
$ create unique index stdname_classid_index_name on tblStudent (stdname,
class_id);
CREATE

If you are unaware of stdname_index_name try
$ \d pg_indexes

for details.

regards,
bhuvaneswaran