This documentation is for an unsupported version of PostgreSQL.
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pg_group exists for backwards compatibility: it emulates a catalog that existed in PostgreSQL before version 8.1. It shows the names and members of all roles that are marked as not
rolcanlogin, which is an approximation to the set of roles that are being used as groups.
Name of the group
ID of this group
An array containing the IDs of the roles in this group