47.51. pg_user_mapping

This catalog exists in each coordinator and datanode in Postgres-XC as inherited from PostgreSQL. Please note that current release of Postgres-XC does not support foreign data wrapper.

Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.

The catalog pg_user_mapping stores the mappings from local user to remote. Access to this catalog is restricted from normal users, use the view pg_user_mappings instead.

Table 47-52. pg_user_mapping Columns

NameTypeReferencesDescription
umuseroidpg_authid.oidOID of the local role being mapped, 0 if the user mapping is public
umserveroidpg_foreign_server.oid The OID of the foreign server that contains this mapping
umoptionstext[]  User mapping specific options, as "keyword=value" strings