56.25. pg_shadow

56.25. `pg_shadow`
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56.25. `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 56.25. 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

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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