日期之间的总和，T-SQL错误

Question

I'm trying to check if one of the join_date or date_of_change (date fields) are within the range and count them but I get an error:

sqlserver.jdbc.SQLServerException: The conversion from int to TIMESTAMP is unsupported.

SUM(CASE WHEN (join_date BETWEEN DATEADD(day, -8, GETDATE()) AND DATEADD(day, -1, GETDATE())) OR (date_of_change BETWEEN DATEADD(day, -8, GETDATE()) AND DATEADD(day, -1, GETDATE())) THEN 1 ELSE 0 END) AS Total

Could someone explain to me what I'm doing wrong.

Original Code:

  SELECT DISTINCT mtype, CASE WHEN (join_date BETWEEN DATEADD(day, -8, 
GETDATE()) AND DATEADD(day, -1, GETDATE())) OR (date_of_change BETWEEN 
DATEADD(day, -8, GETDATE()) AND DATEADD(day, -1, GETDATE())) THEN 1 ELSE 0 
END AS Total FROM T0 GROUP BY mype, join_date,date_of_change

Answer 1

As @Alex K has said there could be another statement in the batch causing the problem as there doesn't seem to be any TimeStamp involved in this query.

Answering your last comment about the GROUP BY, you can simplify the query the following way:

SELECT 
    mtype, COUNT(1) as Total
FROM 
    T0 
WHERE 
    (join_date BETWEEN DATEADD(day, -8, GETDATE()) AND DATEADD(day, -1, GETDATE())) 
    OR (date_of_change BETWEEN DATEADD(day, -8, GETDATE()) AND DATEADD(day, -1, GETDATE())) 
GROUP BY 
    mype

But I am afraid that if the error is in a different statement.

Answer 2

我再次写了查询，它有效了，一定是某个地方有错字