ALTER GROUP SQL - Language Statements ALTER GROUP add users to a group or remove users from a group 2000-01-14 ALTER GROUP name ADD USER username [, ... ] ALTER GROUP name DROP USER username [, ... ] 2000-01-14 name The name of the group to modify. username Users which are to be added or removed from the group. The user names must exist. 2000-01-14 ALTER GROUP Message returned if the alteration was successful. 2000-01-14 ALTER GROUP is used to add or remove users from a group. Only database superusers can use this command. Adding a user to a group does not create the user. Similarly, removing a user from a group does not drop the user itself. Use to create a new group and to remove a group. Add users to a group: ALTER GROUP staff ADD USER karl, john; Remove a user from a group: ALTER GROUP workers DROP USER beth; 2000-01-14 There is no ALTER GROUP statement in SQL92. The concept of roles is similar.