Provided by: postgresql-client-8.4_8.4.11-1_i386
ALTER GROUP - change role name or membership
ALTER GROUP groupname ADD USER username [, ... ]
ALTER GROUP groupname DROP USER username [, ... ]
ALTER GROUP groupname RENAME TO newname
ALTER GROUP changes the attributes of a user group. This is an
obsolete command, though still accepted for backwards compatibility,
because groups (and users too) have been superseded by the more general
concept of roles.
The first two variants add users to a group or remove them from a
group. (Any role can play the part of either a ``user'' or a ``group''
for this purpose.) These variants are effectively equivalent to
granting or revoking membership in the role named as the ``group''; so
the preferred way to do this is to use GRANT [grant(7)] or REVOKE
The third variant changes the name of the group. This is exactly
equivalent to renaming the role with ALTER ROLE [alter_role(7)].
The name of the group (role) to modify.
Users (roles) that are to be added to or removed from the group.
The users must already exist; ALTER GROUP does not create or
The new name of the 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;
There is no ALTER GROUP statement in the SQL standard.
GRANT [grant(7)], REVOKE [revoke(7)], ALTER ROLE [alter_role(7)]