pg_user_mappings view provides access to information about user mappings. This view is essentially a public-readble view of the
pg_user_mapping system catalog table that omits the options field if the user does not have access rights to view it.
||oid||pg_user_mapping.oid||OID of the user mapping.|
||oid||pg_foreign_server.oid||OID of the foreign server that contains this mapping.|
||text||pg_foreign_server.srvname||Name of the foreign server.|
||oid||pg_authid.oid||OID of the local role being mapped, 0 if the user mapping is public.|
||name||Name of the local user to be mapped.|
||text||User mapping-specific options, as “keyword=value” strings.|
To protect password information stored as a user mapping option, the
umoptions column reads as null unless one of the following applies:
USAGEprivilege on it.
Parent topic: System Catalogs Definitions