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[英]How to filter records based on minimum date and some other criteria where each transaction can have multiple dates in SQL?
[英]SQL: Filter records based on record creation date and other criteria
我正在努力尋找一種更好的解決方案,以從用戶呼叫數據表中選擇唯一記錄。 我的表結構如下:
SELECT [MarketName],
[WebsiteName] ,
[ID] ,
[UserID],
[CreationDate],
[CallDuration],
[FromPhone] ,
[ToPhone],
[IsAnswered],
[Source]
FROM [dbo].[UserCallData]
該表中有多個條目,它們具有不同且相同的ID。 我想檢查[FromPhone]和[ToPhone]在過去3個月中是否存在多次,如果是,我想根據[CreationDate]來選擇所有列的第一條記錄,將出現的次數計為TotalCallCount並求和totalCallDuration作為單個記錄。 如果[FromPhone]和[ToPhone]沒有多次出現,我想這樣選擇所有列。 我已經能夠提出如下部分查詢。 但這不會返回所有列而不包括group by子句,也不滿足我的整個條件。 任何幫助,將不勝感激。
select [FromPhone],
MIN([CreationDate]),
[ToPhone],
marketname,
count(*) as TotalCallCount ,
sum(CallDuration) as TotalCallDuration
from [dbo].[UserCallData]
where [CreationDate] >= DATEADD(MONTH, -3, GETDATE())
group by [FromPhone],[ToPhone], marketname
having count([FromPhone]) > 1 and count([ToPhone]) >1
嘗試使用ROW_NUMBER()
;with cte as
(
select *, ROW_NUMBER() OVER(PARTITION BY FromPhone, ToPhone ORDER BY CreationDate) as RN
from UserCallData
where CreationDate >= DATEADD(MONTH, -3, GETDATE())
),
cte_totals as
(
select C1.FromPhone, C1.ToPhone, COUNT(*) as TotalCallCount, SUM(CallDuration) as TotalCallDuration
from cte C1
where exists(select * from cte C2 where C1.FromPhone = C2.FromPhone and C1.ToPhone = C2.ToPhone and C2.RN > 1)
group by C1.FromPhone, C1.ToPhone
)
select C1.*, TotalCallCount, TotalCallDuration
from cte C1
inner join cte_totals C2 on C1.FromPhone = C2.FromPhone and C1.ToPhone = C2.ToPhone
where C1.RN = 1
我在此處直接編寫了查詢,因此它可能會有一些錯誤或類型錯誤,但主要思想可能很清楚。
我不完全確定我已經理解了這個問題,但是如果我有以下內容,可能就是您想要的(或者是一個有用的起點):
SELECT
ucd.FromPhone,
min(ucd.CreationDate) as MinCreationDate,
ucd.ToPhone,
ucd.MarketName,
count(*) as TotalCallCount,
sum(ucd.CallDuration) as TotalCallDuration,
case
when min(ucd.WebsiteName) = max(ucd.WebsiteName) then min(ucd.WebsiteName)
else '* Various'
end as WebsiteName,
case
when min(ucd.ID) = max(ucd.ID) then min(ucd.ID)
else '* Various'
end as ID,
case
when min(ucd.UserID) = max(ucd.UserID) then min(ucd.UserID)
else '* Various'
end as UserID,
case
when min(ucd.IsAnswered) = max(ucd.IsAnswered) then min(ucd.IsAnswered)
else '* Some'
end as IsAnswered,
case
when min(ucd.Source) = max(ucd.Source) then min(ucd.Source)
else '* Various'
end as Source
FROM
dbo.UserCallData ucd
WHERE
ucd.CreationDate >= DATEADD(MONTH, -3, GETDATE())
GROUP BY
ucd.FromPhone,
ucd.ToPhone,
ucd.MarketName
在將行折疊在一起的情況下,如果所有行都在給定列上一致(所以min(Field) = max(Field)
),我將返回min(Field)
值(所有其他值都相同,但避免出現問題)需要其他會干擾其他情況的“分組依據”子句)。 在他們不同意的地方,我返回了"* something"
。
該代碼假定所有列都是文本類型的列(您尚未說過),您可能會遇到轉換錯誤。 它還假定這些字段都不為null
。 如果這些假設不正確,您/我們可以修改代碼。 如果您無法自己做到這一點,請告訴我有關問題,我們將竭盡所能。
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