SQL MAX日期在哪里条款

Question

我需要在我的where子句中使用MAX函数，因为如果我不这样做，它会给我错误的数据。这里是我的代码：

(SELECT 
Index, 
Company, 
FormType, 
MAX(DocumentDate) AS DocumentDate 
FROM dbo.FormInstance AS F 
WHERE f.company = 1234 
AND (
    CAST(FLOOR(CAST([DocumentDate] AS FLOAT))AS DATETIME) 
    BETWEEN CAST(FLOOR(CAST(@StartDate AS FLOAT))AS DATETIME) 
     AND CAST(FLOOR(CAST(@EndDate AS FLOAT))AS DATETIME) 
    ) 
GROUP BY 
Company, 
Index, 
FormType); 

我该怎么做是说和MAX（DocumentDate）是BETWEEN @Start和@End吗？

感谢

Answer 1

您GROUP BY语句后添加HAVING MAX(DocumentDate) BETWEEN @Start AND @End。 HAVING实质上是聚合的WHERE子句。