我想通过我的数据库中的用户名找到我的前5位客户:
数据库代码是:
BEGIN TRANSACTION;
CREATE TABLE "OrderHistory" (
`Username` TEXT,
`ProductID` TEXT,
`Category` INTEGER,
`Date` TEXT,
`Qty` INTEGER,
`ItemHistory` TEXT,
`TotalPrice` INTEGER
);
INSERT INTO `OrderHistory` (Username,ProductID,Category,Date,Qty,ItemHistory,TotalPrice) VALUES
('saqib','1',7,'2017-01-12',2,'Cookie',4),
('saqib','1',7,'2017-01-12',10,'Cookie',20),
('saqib','1',7,'2017-01-13',12,'Cookie',24),
('saqib','1',7,'2017-01-13',8,'Cookie',16),
('malik','1',7,'2017-01-13',5,'Cookie',10),
('malik','1',7,'2017-01-13',4,'Cookie',8),
('dex','1',7,'2017-01-13',7,'Cookie',14),
('olly','1',7,'2017-01-13',3,'Cookie',6),
('matt','1',7,'2017-01-13',9,'Cookie',18);
COMMIT;
我想知道哪些客户购买的产品最多
这是简单的python和sqlite没有使用的框架