Re: find foreign key name

[Tore Halset <halset(at)pvv(dot)ntnu(dot)no>]

On Dec 18, 2007, at 10:36 , Heikki Linnakangas wrote:

> Tore Halset wrote:
> > I want to programatically drop a foreign key constraint via jdbc.  
> > How can I find the foreign key name for a PostgreSQL foreign key  
> > via jdbc? I know all about the related tables and columns, but not  
> > the name of the constraint.
>
> You can query the pg_constraint catalog table:
>
> http://www.postgresql.org/docs/8.2/interactive/catalog-pg-constraint.html
>
> There seems to be some example queries in the user comments that you  
> might be interested.

Thanks. I was hoping for something easy in  
DatabaseMetaData#getExportedKeys.. :) But looking at pg_constraint  
should work fine.

Regards,
 - Tore.