题目内容:
你有如下名为Sales的表。你需要返回销售数据,并按客户名称和销售日期排序。对于每个客户,必须先列出最近的销售。应使用哪个查询?A.SELECT
CustomerName, SalesDate FROM Sales ORDER BY CustomerName, SalesDate;
B.SELECT
CustomerName, SalesDate FROM Sales ORDER BY SalesDate DESC, CustomerName;
C.SELECT CustomerName, SalesDate FROM Sales ORDER BY CustomerName,
SalesDate DESC;
D.SELECT
CustomerName, SalesDate FROM Sales ORDER BY CustomerName DESC;
参考答案: