leetcode 183. Customers Who Never Order（SQL，嵌套查询）38
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贴原题：
解析：
本题是让输出Customers表的Name，并且该Name的Id不在Orders表中CustomerId列中。
很简单的嵌套查询即可实现。
贴代码：
# Write your MySQL query statement belowSELECT Name AS CustomersFROM CustomersWHERE Id NOT IN (SELECT CustomerId FROM Orders);阅读全文
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