上传新文件

3b60b024 · 王晓庆 · ae74d756 · 3b60b024
--- a/query1.sql
+++ b/query1.sql
+print '创建一个视图V_CUSTAVGORDER，按顾客统计每个订单的购买金额和零件数量，要求输出顾客编号，姓名，平均购买金额和平均购买零件数量'
+
+USE TPCH
+Go
+
+CREATE VIEW V_CUSTAVGORDER(custkey, cname, avgprice, qvgquantity)
+AS
+    SELECT C.custkey, MAX(C.name), AVG(O.totalprice), AVG(L.quantity)
+    FROM Customer C, Orders O, Lineitem L
+    WHERE C.custkey = O.custkey AND L.orderkey = O.orderkey
+    GROUP BY C.custkey
+go
+
+SELECT * FROM V_CUSTAVGORDER