[英]Sql Pivoting on date
嘗試將以下邏輯轉換為SQL查詢時出現此錯誤
邏輯:
TRANSFORM First([SirName] & " - " & [SecondName]) AS Name
SELECT qry_Date.RoomNumber
FROM Guest RIGHT JOIN qry_Date ON Guest.ID = qry_Date.GuestID
WHERE (((qry_Date.RoomNumber) Is Not Null))
GROUP BY qry_Date.RoomNumber
PIVOT qry_Date.Date;
以下是我到目前為止所做的
DECLARE @cols AS NVARCHAR(MAX)
DECLARE @query AS VARCHAR(MAX)
SELECT @cols = STUFF((SELECT distinct top 100 percent
',' + QUOTENAME(convert(NVARCHAR(MAX),qry_Date.Date,103))
FROM qry_Date
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'');
SET @query = 'SELECT Name, ' + @cols + '
FROM
(SELECT [SirName] + '' - '' + [SecondName] AS Name
,qry_Date.RoomNumber
,qry_Date.Date
FROM Guest RIGHT JOIN qry_DateTemp ON Guest.ID = qry_Date.GuestID
WHERE qry_Date.RoomNumber Is Not Null) as t
PIVOT
(count(Name) FOR [Date] IN( ' + @cols + ')
) as p'
print @query
execute(@query)
哪個導致錯誤
消息8114,級別16,狀態1,行9將數據類型nvarchar轉換為datetime2時出錯。 消息473,級別16,狀態1,行9 PIVOT操作符中提供了不正確的值“ 13/12/2014”。 消息207,級別16,狀態1,第1行無效的列名稱“名稱”。
我的print @query
輸出
SELECT Name, [01/12/2014],[02/12/2014],[03/12/2014],[04/12/2014],[05/12/2014],[06/12/2014],[07/12/2014],[08/12/2014],[09/12/2014],[10/12/2014],[11/12/2014],[12/12/2014],[13/12/2014],[14/12/2014],[15/12/2014],[16/12/2014],[17/12/2014],[18/12/2014],[19/12/2014],[20/12/2014],[21/12/2014],[22/12/2014],[23/12/2014],[24/12/2014],[25/12/2014],[26/12/2014],[27/12/2014],[28/12/2014],[29/12/2014],[30/12/2014],[31/12/2014]
FROM
(SELECT [SirName] + '' - '' + [SecondName] AS Name
,qry_Date.RoomNumber
,qry_Date.Date
FROM Guest RIGHT JOIN qry_Date ON Guest.ID = qry_Date.GuestID
WHERE qry_Date.RoomNumber Is Not Null) as t
PIVOT
(count(Name) FOR [Date] IN( [01/12/2014],[02/12/2014],[03/12/2014],[04/12/2014],[05/12/2014],[06/12/2014],[07/12/2014],[08/12/2014],[09/12/2014],[10/12/2014],[11/12/2014],[12/12/2014],[13/12/2014],[14/12/2014],[15/12/2014],[16/12/2014],[17/12/2014],[18/12/2014],[19/12/2014],[20/12/2014],[21/12/2014],[22/12/2014],[23/12/2014],[24/12/2014],[25/12/2014],[26/12/2014],[27/12/2014],[28/12/2014],[29/12/2014],[30/12/2014],[31/12/2014])
) as p
處理此錯誤的一種快速方法是以相同方式將所有數據轉換為varchar(max)。 所有日期都將成為標題之后,因此它應該是字符串。
DECLARE @cols AS NVARCHAR(MAX)
DECLARE @query AS VARCHAR(MAX)
SELECT @cols = STUFF((SELECT distinct top 100 percent
',' + QUOTENAME(CAST(qry_Date.Date AS NVARCHAR(MAX)))
FROM qry_Date
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'');
SET @query = 'SELECT RoomNumber, ' + @cols + '
FROM
(SELECT [SirName] + '' - '' + [SecondName] AS Name
,qry_Date.RoomNumber
,CAST(qry_Date.Date AS NVARCHAR(MAX)) as [Date]
FROM Guest RIGHT JOIN qry_DateTemp ON Guest.ID = qry_Date.GuestID
WHERE qry_Date.RoomNumber Is Not Null) as t
PIVOT
(count(Name) FOR [Date] IN( ' + @cols + ')
) as p'
print @query
execute(@query)
@DhruvJoshi按照您的建議完成了,確實我錯了。 當我得到結果時,我不得不將查詢更改為
DECLARE @cols AS NVARCHAR(MAX)
DECLARE @query AS VARCHAR(MAX)
SELECT @cols = STUFF((SELECT distinct top 100 percent
',' + QUOTENAME(CAST(qry_Date.Date AS NVARCHAR(MAX)))
FROM qry_Date
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'');
SET @query = 'SELECT RoomNumber, ' + @cols + '
FROM
(SELECT [SirName] + '' - '' + [SecondName] AS Names
,qry_Date.RoomNumber
,CAST(qry_Date.Date AS NVARCHAR(MAX)) as [Date]
FROM Guest RIGHT JOIN qry_Date ON Guest.ID = qry_Date.GuestID
WHERE qry_Date.RoomNumber Is Not Null) as t
PIVOT
(MAX([Names]) FOR [Date] IN( ' + @cols + ')
) as p'
print @query
execute(@query)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.