pg_conversion

The pg_conversion system catalog table describes the available encoding conversion procedures as defined by CREATE CONVERSION.

Table 1. pg_catalog.pg_conversion

column	type	references	description
oid	oid		The object ID
conname	name		Conversion name (unique within a namespace).
connamespace	oid	pg_namespace.oid	The OID of the namespace (schema) that contains this conversion.
conowner	oid	pg_authid.oid	Owner of the conversion.
conforencoding	integer		Source encoding ID.
contoencoding	integer		Destination encoding ID.
conproc	regproc	pg_proc.oid	Conversion procedure.
condefault	boolean		True if this is the default conversion.