NAME

       ALTER_GROUP - change role name or membership

SYNOPSIS

       ALTER GROUP role_specification ADD USER user_name [, ... ]
       ALTER GROUP role_specification DROP USER user_name [, ... ]

       where role_specification can be:

           role_name
         | CURRENT_ROLE
         | CURRENT_USER
         | SESSION_USER

       ALTER GROUP group_name RENAME TO new_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       superseded by the more general concept of roles.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.

       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 GROUP does 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.

SEE ALSO

       GRANT(7), REVOKE(7), ALTER ROLE (ALTER_ROLE(7))