本文共 1122 字,大约阅读时间需要 3 分钟。
(1)SELECT select_list
(2) FROM table_list
(3) WHERE search_conditions
GROUP BY group_by_list
HAVING search_conditions
(4) ORDER BY order_list
实例:
/*USE master;GOIF DB_ID(N'mytest') IS NOT NULL DROP DATABASE mytest;GOCREATE DATABASE mytest;GOUSE mytest;GOIF OBJECT_ID(N'dbo.Oreders') IS NOT NULL DROP TABLE dbo.Orders;GOCREATE TABLE dbo.Orders( ProductID INT NOT NULL, MadeFrom CHAR(20), Sales MONEY NOT NULL);INSERT INTO dbo.OrdersVALUES (10,'China',100.00), (20,'US',500.00), (13,'China',10.00), (3,'UK',80.00), (2,'UK',90.00), (1,'US',320.00), (12,'Ger',214.00), (18,'Ger',125.00), (7,'JP',69.00), (1,'China',70.00), (5,'UK',560.00), (21,'China',211.00), (4,'China',89.00), (14,'China',100.00), (19,'China',100.00), (13,'China',100.00), (17,'China',100.00), (22,'China',100.00), (11,'China',100.00), (2,'China',100.00), (1,'China',100.00), (22,'China',100.00);...*/SELECT ProductID, SUM(Sales) AS TotalSales FROM dbo.Orders WHERE MadeFrom = N'China' GROUP BY ProductID HAVING SUM(Sales) > 150 ORDER BY ProductID;
结果图:
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