修改查询sql

如何解决修改查询sql

|| 我有一个查询来聚合（压缩）从1分钟到任何其他时间范围的数据，并且它运行完美。

Use StockDataFromSella;
DECLARE @D1 DateTime 
DECLARE @D2 DateTime 
DECLARE @Interval FLOAT 

SET @D1  = \'2008-09-21T09:00:00.000\' 
SET @D2  = \'2010-10-20T17:30:00.000\'
SET @Interval = 15 

;WITH  
L0 AS (SELECT 1 AS c UNION ALL SELECT 1),L1 AS (SELECT 1 AS c FROM L0 A CROSS JOIN L0 B),L2 AS (SELECT 1 AS c FROM L1 A CROSS JOIN L1 B),L3 AS (SELECT 1 AS c FROM L2 A CROSS JOIN L2 B),L4 AS (SELECT 1 AS c FROM L3 A CROSS JOIN L3 B),Nums AS (SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 0)) AS i FROM L4),Ranges AS( 
SELECT  
      DATEADD(MINUTE,@Interval*(i-1),@D1) AS StartRange,DATEADD(MINUTE,@Interval*i,@D1) AS NextRange 
FROM Nums where i <= 1+CEILING(DATEDIFF(MINUTE,@D1,@D2)/@Interval)),cte AS ( 
SELECT  
     *,ROW_NUMBER() OVER (PARTITION BY Simbolo,r.StartRange ORDER BY [DataOra])      AS RN_ASC,r.StartRange ORDER BY [DataOra] DESC) AS RN_DESC 
FROM Ranges r 
JOIN dbo.tbl1MinENI p  ON p.[DataOra] >= r.StartRange and p.[DataOra] < r.NextRange ) 
SELECT  
      Simbolo,MAX(CASE WHEN RN_ASC=1 THEN [DataOra] END) AS DataOra,MAX(CASE WHEN RN_ASC=1 THEN [Apertura] END) AS [Apertura],MAX(Massimo) Massimo,MIN(Minimo)  Minimo,MAX(CASE WHEN RN_DESC=1 THEN [Chiusura] END) AS [Chiusura],SUM(Volume) Volume
      /*MAX(CASE WHEN RN_DESC=1 THEN [DataOra] END) AS ChiusuraDataOra*/
FROM cte 
GROUP BY Simbolo,StartRange 
ORDER BY DataOra

我想将第二列DataOra（DateTime）分为两个不同的列，一列用于日期（如果可能以dd / mm / yyyy格式显示），第二列仅用于时间。 任何帮助，非常感谢，谢谢。 阿尔贝托     

解决方法

        获得这些值的最简单方法是使用

CONVERT

。转换日期时，SQL Server具有一些内置的日期格式。

 CONVERT(VARCHAR,MAX(CASE WHEN RN_ASC=1 THEN [DataOra] END),103) AS DataOraDate,CONVERT(VARCHAR,114) AS DataOraTime,

这两个代码（103和114）对应于所需的格式。请参阅http://msdn.microsoft.com/zh-cn/library/ms187928.aspx，以获取有关这些格式以及可以转换为其他格式的更多信息。     ,        看来您只需要更改选择。 代替这个

MAX(CASE WHEN RN_ASC=1 THEN [DataOra] END) AS DataOra,

用这个：

CONVERT(VARCHAR(8),108) AS HourMinuteSecond,CONVERT(VARCHAR(8),101) AS DateOnly,

希望能帮助到你。