Postgresql 中文操作指南

54.34. pg_user_mappings #

视图 pg_user_mappings 提供访问用户映射信息的权限。这本质上是对 pg_user_mapping 的公开可读视图，如果用户没有权利使用它，则去除选项字段。

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 54.34. pg_user_mappings Columns

Column Type

Description

umid oid (references pg_user_mapping.oid)

OID of the user mapping

srvid oid (references pg_foreign_server.oid)

The OID of the foreign server that contains this mapping

srvname name (references pg_foreign_server.srvname)

Name of the foreign server

umuser oid (references pg_authid.oid)

OID of the local role being mapped, or zero 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

若要保护以用户信息映射选项的形式存储的密码信息，umoptions 列将读取为 NULL，除非适用以下情况之一：

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