$query="SELECT (SELECT IFNULL(SUM(admission_fee), 0) as adm_fee,IFNULL(SUM(tution_fee), 0) as tution_fee FROM admit_senior join senior_addfees on senior_addfees.senior_addfees_id=admit_senior.senior_addfee_id where admit_senior.reg_date ='2019-09-03')+(SELECT IFNULL(SUM(admission_fee), 0) as adm_fee,IFNULL(SUM(tution_fee), 0) as tution_fee FROM admit_senior_old join senior_addfees on senior_addfees.senior_addfees_id=admit_senior_old.senior_addfee_id where admit_senior_old.reg_date ='2019-09-03')+(SELECT IFNULL(SUM(admission_fee), 0) as adm_fee,IFNULL(SUM(tution_fee), 0) as tution_fee FROM admit_senior_old_1 join senior_addfees on senior_addfees.senior_addfees_id=admit_senior_old_1.senior_addfee_id where admit_senior_old_1.reg_date ='2019-09-03') AS adm_fee,tution_fee ";
我正在按上述查询条件创建查询，返回错误为“＃1241-操作数应包含1列”，需要帮助来更改查询。