PostgreSQL 9.6.5 Documentation
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50.63. pg_group

The view 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.

Table 50-64. pg_group Columns

NameTypeReferencesDescription
gronamenamepg_authid.rolnameName of the group
grosysidoidpg_authid.oidID of this group
grolistoid[]pg_authid.oidAn array containing the IDs of the roles in this group
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