varsql="select * from dc_base_crm_refund where 1=1 ";
varsql="select t1.*,if(t2.bailun_shipping_status is null,t3.bailun_shipping_status,t2.bailun_shipping_status) as bailun_shipping_status from dc_base_crm_refund t1 left join dc_base_oms_order t2 on t1.origin_order_id=t2.origin_order_id left join dc_base_oms_order t3 on t1.origin_order_id=t3.transaction_id where 1=1 ";