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

    columntypereferencesdescription
    connamename Conversion name (unique within a namespace).
    connamespaceoidpg_namespace.oidThe OID of the namespace (schema) that contains this conversion.
    conowneroidpg_authid.oidOwner of the conversion.
    conforencodingint4 Source encoding ID.
    contoencodingint4 Destination encoding ID.
    conprocregprocpg_proc.oidConversion procedure.
    condefaultboolean True if this is the default conversion.

    Parent topic: System Catalogs Definitions