BUG #4078: ERROR: operator does not exist: numeric = character varying

The following bug has been logged online:

Bug reference:      4078
Logged by:          rupesh
Email address:      patil.rupesh@gmail.com
PostgreSQL version: 8.3
Operating system:   linux 4.0
Description:        ERROR:  operator does not exist: numeric = character
varying
Details:

ERROR:  operator does not exist: numeric = character varying at character
675
HINT:  No operator matches the given name and argument type(s). You might
need to add explicit type casts.
(0.735 sec)


This was previously working in 8.2.3 but not in 8.3