DELETE FROM mom_eam_operation_certificate_detail WHERE operation_certificate_id = #{mainId} SELECT t1.*,t3.name equipmentName,t4.deduction_score deductionScore,t4.content deductionScoreName FROM mom_eam_operation_certificate_detail t1 left join mom_eam_operation_certificate t2 on t1.operation_certificate_id = t2.id left join mom_eam_equipment t3 on t3.id = t1.equipment_id left join mom_eam_base_deduction_item t4 on t4.id = t1.deduction_item WHERE operation_certificate_id = #{mainId}