$client=$app->db->queryOneRecord("SELECT client_id FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = $client_group_id");
$client=$app->db->queryOneRecord("SELECT client_id FROM sys_group WHERE sys_group.groupid = $client_group_id");
$client=$app->db->queryOneRecord("SELECT client_id FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = $client_group_id");
$client=$app->db->queryOneRecord("SELECT client_id FROM sys_group WHERE sys_group.groupid = $client_group_id");