SELECT * FROM y_contract_tenancy t left join y_contract contract on t.contract_id =contract.id WHERE contract.del_flag = '0' and t.build_id = #{build_id} and t.del_flag=0 and t.status=0 and t.is_effect=1 and datediff( t.pay_time,curdate()) <= contract.remind_day and t.company_id=#{company_id} order by t.pay_time limit #{count} SELECT count(id) FROM y_contract_tenancy t WHERE t.pay_time = #{pay_time} and contract_id=#{contract_id} SELECT * FROM y_contract_tenancy t WHERE t.del_flag = '0' and t.contract_no = #{contract_no} and t.del_flag=0 order by t.period desc limit 1 update y_contract_tenancy set del_flag=1 where contract_id=#{contract_id}