我有一份 SSRS 报告，其中显示自收到投诉以来经过的总天数。此 SQL 查询是今天日期与上次收到投诉日期之间的差异。
SELECT DATEDIFF(day, MAX(complaints.ComplaintReceived1Date),CURRENT_TIMESTAMP) as total
FROM complaints WITH (nolock)
例如，如果将其设置为 30（天），然后在我的 SSRS 报告中收到投诉，我希望将 30 显示为之前没有投诉记录的天数。有没有办法存储以前的结果并调用这些数据？也许是一个临时表？
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标签： tsql reporting-services sql-server-2008-r2 temp-tables
您已经将它存储在您的 SQL 查询引用的表中。
我会从那里取回它：
; with previouscomplaint as (
select
complaintreceived1date,
RN = ROW_NUMBER() over (partition by complaintreceived1dateorder by complaintreceived1date desc))
select datediff(day,complaintreceived1date,current_timestamp) as previoustotal from previouscomplaint where RN=2
如果你想要两行之间的日期，做第二个语句：
select datediff(day, (select complaintreceived1date from previouscomplaint where rn = 2),(select complaintreceived1date from previouscomplaint where rn = 1)) as previoustotal
这未经测试，但应该可以工作。
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