September 26, 2024: PostgreSQL 17 Released!
Unsupported versions: 8.0 / 7.4 / 7.3 / 7.2 / 7.1
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the other supported versions listed above instead.

3.8. pg_group

This catalog defines groups and stores what users belong to what groups. Groups are created with the CREATE GROUP command. Consult the Administrator's Guide for information about user permission management.

Because user and group identities are cluster-wide, pg_group is shared across all databases of a cluster: there is only one copy of pg_group per cluster, not one per database.

Table 3-8. pg_group Columns

Name Type References Description
groname name   Name of the group
grosysid int4   An arbitrary number to identify this group
grolist int4[] pg_shadow.usesysid An array containing the ids of the users in this group