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_USERALTER 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is an obsolete command, though still accepted for backwards compatibility, because groups (and users too) have been superseded by the more general concept of roles.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 useGRANT orREVOKE. Note thatGRANT andREVOKE have additional options which are not available with this command, such as the ability to grant and revokeADMIN 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 withALTER ROLE.
Parameters
group_nameThe name of the group (role) to modify.
user_nameUsers (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_nameThe 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 noALTER GROUP statement in the SQL standard.