四处寻找类似情况,但找不到解决方案。也许不使用临时表太复杂了?
我希望能够创建一个新列来显示客户是否曾经使用过优惠券。除此之外,还希望提取最近购买的商品,并按姓氏排序。
我已经能够通过分区来获取最新的交易,但是找不到逻辑来找到优惠券用户,这可以一步完成吗?还是必须将其输出到临时表中?
输入数据:
TransDateTime TransID CustID FirstName LastName NumItems TotalAmt CouponUsed
2018-01-09 11:57:24 39451634836 334096 Al Einstein 5 $1,420.44 Coupon
2018-01-14 17:15:25 39451634837 299080 George Clooney 1 $816.64
2018-01-15 19:34:42 39451634838 212950 Stephanie Germanauto 2 $2,583.64
2018-01-15 22:32:06 39451634839 258006 Sandy Bullock 2 $718.36
2018-01-16 23:34:23 39451634840 212950 Stephanie Germanauto 3 $1,432.63
2018-01-18 09:38:39 39451634841 299080 George Clooney 8 $1,073.50
2018-01-18 19:36:42 39451634842 258006 Sandy Bullock 4 $1,035.75 Coupon
2018-01-20 05:58:48 39451634843 334096 Al Einstein 3 $1,145.06
2018-01-25 12:16:11 39451634844 212950 Stephanie Germanauto 7 $1,059.55
2018-01-31 11:09:41 39451634845 258006 Sandy Bullock 6 $633.98 Coupon
2018-02-02 14:17:44 39451634846 299080 George Clooney 9 $925.55
2018-02-03 19:57:32 39451634847 212950 Stephanie Germanauto 6 $685.47 Coupon
输出数据:
TransDateTime TransID CustID FirstName LastName NumItems TotalAmt CouponUsed CouponCust
2018-01-31 11:09:41 39451634845 258006 Sandy Bullock 6 $633.98 Coupon Yes
2018-02-02 14:17:44 39451634846 299080 George Clooney 9 $925.55
2018-01-20 05:58:48 39451634848 334096 Al Einstein 3 $1,145.06 Yes
2018-02-03 19:57:32 39451634847 212950 Stephanie Germanauto 6 $685.47 Coupon Yes
有人有什么想法吗?
预先感谢您指出正确的方向。