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Changes a role name or membership.
ALTER GROUP groupname ADD USER username [, ... ] ALTER GROUP groupname DROP USER username [, ... ] ALTER GROUP groupname RENAME TO newname
ALTER GROUP is an obsolete command, though still accepted for backwards compatibility. Groups (and users) have been superseded by the more general concept of roles. See ALTER ROLE for more information.
- The name of the group (role) to modify.
- Users (roles) that are to be added to or removed from the group. The users (roles) must already exist.
- The new name of the group (role).
To add users to a group:
ALTER GROUP staff ADD USER karl, john;
To remove a user from a group:
ALTER GROUP workers DROP USER beth;
There is no ALTER GROUP statement in the SQL standard.