將sql行轉換爲列

我有一個非常不尋常的請求。我在表中有一些過濾的數據，列是ID，日期和事件。 Event是一個XML列，其中一個標籤是StartWork和EndWork。我從龐大的數據中篩選出了一個請求的數據。我的示例數據有6行，按照StartWork，EndWork，StartWork，EndWork等的順序排列。我想要做的是在每個組合之間找出時間差異。我的意思是，EndWork - StartWork = Difference。 Next EndWork - StartWork = Difference2等等。將sql行轉換爲列

基本上我想，2-1，4-3，6-5等。我試着用樞軸這樣做，但不能得到期望的結果

來源

2015-08-20 anshul

Select DateDiff(minute,StartWork.datacreated,EndWork.datacreated) 
from 
(Select datacreated,LineNb=row_number() over(Order by datacreated) from Table where eventdata.value('(/data/status/text())[1]','varchar(15)')='StartWork') StartWork 
INNER JOIN 
(Select datacreated,LineNb=row_number() over(Order by datacreated) from Table where eventdata.value('(/data/status/text())[1]','varchar(15)')='EndWork') EndWork 
ON StartWork.LineNb=EndWork.LineNb

來源

2015-08-20 10:52:03 Hercule

謝謝hercule。這個解決方案工作 – anshul

這會幫助你：

declare @xmlStart XML='<data><status>StartWork</status></data>'; 
declare @xmlENd XML='<data><status>EndWork</status></data>'; 

declare @tbl TABLE(id INT,datecreated DATETIME,eventdata XML); 
INSERT INTO @tbl VALUES(1,{ts'2015-07-29 09:17:34'},@xmlStart) 
         ,(2,{ts'2015-07-29 09:20:24'},@xmlEnd) 
         ,(3,{ts'2015-07-29 10:05:41'},@xmlStart) 
         ,(4,{ts'2015-07-29 10:18:34'},@xmlEnd); 

WITH resolvedCTE AS 
(
    SELECT TOP 100 PERCENT id,datecreated,eventdata.value('(/data/status)[1]','varchar(max)') AS EventStatus FROM @tbl 
) 
,StartEvnets AS 
(
    SELECT ROW_NUMBER() OVER(ORDER BY datecreated) AS inx,id,datecreated FROM resolvedCTE WHERE EventStatus='StartWork' 
) 
,EndEvnets AS 
(
    SELECT ROW_NUMBER() OVER(ORDER BY datecreated) AS inx,id,datecreated FROM resolvedCTE WHERE EventStatus='EndWork' 
)SELECT StartEvnets.id, CAST(EndEvnets.datecreated - StartEvnets .datecreated AS TIME) 
FROM StartEvnets 
INNER JOIN EndEvnets ON StartEvnets.inx =EndEvnets.inx

來源

2015-08-20 10:43:35 Shnugo

SQL 2008不是2012年 – anshul

好吧，我搗鼓出來的東西... – Shnugo

由@hercule的解決方案是在相同的邏輯上，它只是更簡單一些。它不使用CTE。 – anshul

假設「TBL」是你的表名。在這裏你去：作爲回答

SELECT t.datecreated - t2.datecreated 
FROM tbl t, tbl t2 
WHERE t.id IN 
    (SELECT id FROM tbl WHERE _eventdata LIKE ('%EndWork%')) 
    AND t2.id = t.id -1

請標誌，如果它的工作原理...

來源

2015-08-20 11:04:04

將sql行轉換爲列

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