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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
`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`	int4		Source encoding ID.
`contoencoding`	int4		Destination encoding ID.
`conproc`	regproc	pg_proc.oid	Conversion procedure.
`condefault`	boolean		True if this is the default conversion.