Question

我有以下从SSRS到MySQL数据库的ODBC查询：

SELECT     ID,  StartTime, StartTimeMS, EndTime, EndTimeMS, TIMEDIFF(EndTime, StartTime) AS CallDuration, CallType, CallerID, DialedNumber, Extension
FROM        `call`
WHERE     (CallerID = ?) OR
                  (Extension = ?) AND (StartTime < ?) AND (StartTime > ?)

当我运行SSRS时，前两个参数会提示两次。理想情况下，我只需输入一次该值即可使用两次。我可以在SSRS查询中使用位置参数两次，以便不会提示用户两次吗？

Answer 1

命名参数：

SELECT     ID,  StartTime, StartTimeMS, EndTime, EndTimeMS, TIMEDIFF(EndTime, StartTime) AS CallDuration, CallType, CallerID, DialedNumber, Extension
FROM        `call`
WHERE     (CallerID = @number) OR
                  (Extension = @number) AND (StartTime < @EndDate) AND (StartTime > @BeginDate)

Answer 2

我不认为您可以将命名参数传递给MySQL，但我认为您可以在查询中创建它们：

SET @number = ?
SET @EndDate = ?
SET @BeginDate = ?


SELECT     ID,  StartTime, StartTimeMS, EndTime, EndTimeMS, TIMEDIFF(EndTime, StartTime) AS CallDuration, CallType, CallerID, DialedNumber, Extension
FROM        `call`
WHERE    ( (CallerID = @number) OR (Extension = @number) ) AND (StartTime < @EndDate) AND (StartTime > @BeginDate)

我认为您需要将 OR 子句放在一组单独的括号中。

我可以使用两次ODBC参数吗？

2 个答案: