The view pg_user_mappings provides access to information about user mappings. This is essentially a publicly readable view of pg_user_mapping that leaves out the options field if the user has no rights to use it.

Table 49-81. pg_user_mappings Columns

Name Type References Description
umid oid pg_user_mapping .oid OID of the user mapping
srvid oid pg_foreign_server .oid The OID of the foreign server that contains this mapping
srvname name pg_foreign_server .srvname Name of the foreign server
umuser oid pg_authid .oid OID of the local role being mapped, 0 if the user mapping is public
usename name Name of the local user to be mapped
umoptions text[] User mapping specific options, as "keyword=value" strings

To protect password information stored as a user mapping option, the umoptions column will read as null unless one of the following applies:

  • current user is the user being mapped, and owns the server or holds USAGE privilege on it

  • current user is the server owner and mapping is for PUBLIC

  • current user is a superuser