ALTER GROUP
ALTER GROUP
ALTER GROUP - change role name or membership
Synopsis
ALTER GROUProle_specificationADD USERuser_name[, ... ] ALTER GROUProle_specificationDROP USERuser_name[, ... ] whererole_specificationcan be:role_name| CURRENT_ROLE | CURRENT_USER | SESSION_USER ALTER GROUPgroup_nameRENAME TOnew_name
Description
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compatibility, because groups (and users too) have been superseded by the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
or
REVOKE
. Note that
GRANT
and
REVOKE
have additional
options which are not available with this command, such as the ability
to grant and revoke
ADMIN OPTION
, and the ability to
specify the grantor.
The third variant changes the name of the group. This is exactly
equivalent to renaming the role with
ALTER ROLE
.
Parameters
-
group_name -
The name of the group (role) to modify.
-
user_name -
Users (roles) that are to be added to or removed from the group. The users must already exist;
ALTER GROUPdoes not create or drop users. -
new_name -
The new name of the group.
Examples
Add users to a group:
ALTER GROUP staff ADD USER karl, john;
Remove a user from a group:
ALTER GROUP workers DROP USER beth;
Compatibility
There is no
ALTER GROUP
statement in the SQL
standard.