51.86. pg_shadow

The view pg_shadow exists for backwards compatibility: it emulates a catalog that existed in PostgreSQL before version 8.1. It shows properties of all roles that are marked as rolcanlogin in pg_authid.

The name stems from the fact that this table should not be readable by the public since it contains passwords. pg_user is a publicly readable view on pg_shadow that blanks out the password field.

Table 51.87. pg_shadow Columns

Column Type

Description

usename name (references pg_authid.rolname)

User name

usesysid oid (references pg_authid.oid)

ID of this user

usecreatedb bool

User can create databases

usesuper bool

User is a superuser

userepl bool

User can initiate streaming replication and put the system in and out of backup mode.

usebypassrls bool

User bypasses every row level security policy, see Section 5.8 for more information.

passwd text

Password (possibly encrypted); null if none. See pg_authid for details of how encrypted passwords are stored.

valuntil timestamptz

Password expiry time (only used for password authentication)

useconfig text[]

Session defaults for run-time configuration variables
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https://www.postgresql.org/docs/13/view-pg-shadow.html