sql查询计数两个日期之间的多行

Question

问候， 我想建立一个查询，将提供两个日期之间的所有记录（一些记录是反复出现的）的总数。我被困在以下查询：

SELECT DISTINCT Country, COUNT(Country) as Count, Date 
From DataSet 
GROUP BY Country, Date 
ORDER BY Country HAVING Date>'1/1/2000' 

在此先感谢。

Answer 1

SELECT DISTINCT Country, COUNT (Country) AS COUNT 
    FROM DataSet 
    WHERE Date BETWEEN '01-01-2010' AND '01-01-2011' 
GROUP BY Country 
ORDER BY Country 

你不应该按日期组，因为你会得到每一个日期排

Answer 2

SELECT Country, COUNT(DISTINCT Country) as "Count" 
FROM DataSet GROUP BY Country, Date 
HAVING Date>'1/1/2000'; 

因为HAVING没有被确定与顺序设置coorect它