用这个查询把我的头发拉出来。也许这里的一些专家可以看到我做错了什么?
我有一个 TimeSheetTime 表,如下所示:
CREATE TABLE TimeSheetTime(
TimeSheetTimeID int IDENTITY(1,1) NOT NULL,
TimeSheetItemID int NOT NULL,
OffsetToEntryDate tinyint NOT NULL,
Hours float NOT NULL
)
这填充了一些数据,如下所示:
INSERT TimeSheetTime (TimeSheetItemID, OffsetToEntryDate, Hours)
SELECT 1,1,7
UNION SELECT 1,3,1.5
UNION SELECT 1,0,1
UNION SELECT 2,1,0
UNION SELECT 2,4,0
UNION SELECT 2,3,0
UNION SELECT 3,2,0
UNION SELECT 3,4,1
UNION SELECT 3,5,2
UNION SELECT 3,1,2
UNION SELECT 3,2,4
UNION SELECT 4,3,5
UNION SELECT 4,5,16
UNION SELECT 4,2,1
UNION SELECT 5,3,0.5
UNION SELECT 5,4,1
UNION SELECT 5,3,1
UNION SELECT 5,4,4
UNION SELECT 6,5,4
UNION SELECT 6,1,0.5
UNION SELECT 6,2,3.2
UNION SELECT 7,3,0.2
UNION SELECT 7,5,1.5
UNION SELECT 7,1,0.1
UNION SELECT 8,3,0.4
UNION SELECT 8,5,0.5
UNION SELECT 8,1,0.3
UNION SELECT 8,3,1
UNION SELECT 9,5,2
UNION SELECT 9,3,0.5
现在我想返回一个数据集,该数据集具有 TimeSheetItemID,后跟 PIVOT SUM of Hours,排列在 OffsetToEntryDate 的列中。即:
TimeSheetItemID | 0 | 1 | 2 | 3 | 4 | 5 | 6
我尝试了以下
SELECT *
FROM TimeSheetTime
pivot
(
SUM(Hours)
FOR OffSetToEntryDate
IN (0,1,2,3,4,5,6)
) as TST
任何建议表示赞赏。