->field("FROM_UNIXTIME(pay_time,'%Y-%m') as my_time,sum(pay_amount) as pay_amount,game_id,game_name,SUBSTRING_INDEX(`game_name`,\"(\",1) as game_names,promote_id,promote_account,company_relation,company_belong,CASE WHEN SUBSTRING_INDEX(SUBSTRING_INDEX(`chain`,\"/\",2),\"/\",-1)='' THEN promote_id ELSE SUBSTRING_INDEX(SUBSTRING_INDEX(`chain`,\"/\",2),\"/\",-1) END as root_id ")
->join("left join tab_promote on promote_id = tab_promote.id")