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【请教】SQL语句按列1去重来计算列2之和
2022-08-02 06:38:00 【CSDN问答】
已知订单发货记录表_Orders
1）如果写SQL语句 导出每个订单的最新完成率表NewOrders 如下表
2）如果写SQL语句 计算出不重复订单编号的订单总数（300）
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