大家早上好,我正在写一段代码来更新我的客户表。SET RECENTLY_PURCHASED= (SELECT CASE WHEN (DATE_PURCHASED BETWEEN ADD_MONTHS(SYSDATE,-12) AND SYSDATE) THEN 'Y' ELSE 'N' ENDwhere C.customer_id=D.customer_id)Single query returning more than o
当我试图得到这个查询的计数时,我遇到了一个问题。$query .= "SELECT *, GROUP_CONCAT(orders.product) as PRO FROM id_of_orders,orders WHERE 1=1 AND orders.order_id = id_of_orders.id_order"; $query .= " AND id_of_orde