Question

在为查询定义的代码中，向我显示前3个结果

SELECT TOP 3 C.NameCity
FROM Users_A AS A, Cities AS C
WHERE (((A.UserEconomicStatus)="מבוסס") AND ((A.UserCity)=[C].[NumCity]))
GROUP BY C.NameCity
ORDER BY Count(*) DESC;

但这是查询返回的内容 https://ibb.co/dtkjJJ 5结果

Answer 1

据推测，您正在使用MS Access。在MS Access中top的行为类似于top with ties。您需要一个额外的密钥才能使分类稳定。

这样的事情：

SELECT TOP 3 C.NameCity
FROM Users_A AS A JOIN
     Cities AS C
     ON A.UserCity = [C].[NumCity]
WHERE A.UserEconomicStatus = "מבוסס"
GROUP BY C.NameCity
ORDER BY Count(*) DESC, C.NameCity;

查询返回我为其定义的更多结果

1 个答案: