Duplicate Key Error Message Very Vague

Duplicate Key Error Message Very Vague,

I got the following message when doing an update:

duplicate key violates unique constraint "user_role_pkey"

Is there a reason PostgreSQL could not be modified to tell us the values
of the keys so we could then trouble shoot the issue?

Example: If the primary field was field1 and field2 then the error
message would say:

duplicate key violates unique constraint "user_role_pkey", values of
123, 'abcd' were used.

Thanks,

Lance Campbell

Project Manager/Software Architect

Web Services at Public Affairs

University of Illinois

217.333.0382

http://webservices.uiuc.edu