【问题标题】:How can I PIVOT TABLE Or CrossTab By Datetime?如何按日期时间透视表或交叉表?
【发布时间】:2012-11-12 17:16:03
【问题描述】:

我需要交叉表或数据透视表通过选择日期时间。

表格文件TA

EmpNo     ChkDate                    ChkIn
00001     2012-10-10 00:00:00.000    2012-10-10 07:22:00.000
00002     2012-10-10 00:00:00.000    2012-10-10 07:30:00.000
00001     2012-10-11 00:00:00.000    2012-10-11 07:13:00.000
00002     2012-10-11 00:00:00.000    2012-10-11 07:34:00.000
00001     2012-10-12 00:00:00.000    2012-10-12 07:54:00.000
00002     2012-10-12 00:00:00.000    2012-10-12 07:18:00.000

我已尝试关注

SELECT tf.EmpNo,tf.ChkDate,tf.ChkIn
FROM (SELECT EmpNo,ChkDate,ChkIn
        ,ROW_NUMBER() OVER(PARTITION BY EmpNo ORDER BY ChkDate) as tfNum
        FROM filesTA) AS tf
    PIVOT(MIN(ChkDate) FOR tfNum IN ('2012-10-10'))
WHERE tf.ChkDate Between '2012-10-10' and '2012-10-12'

但出现以下错误

Incorrect syntax near 'PIVOT'. You may need to set the compatibility
level of the current database to a higher value to enable this feature.
See help for the SET COMPATIBILITY_LEVEL option of ALTER DATABASE.

所需的输出:

EmpNo     10     11     12
00001     07:22  07:13  07:54
00002     07:30  07:34  07:18

我开始学习数据透视表和交叉表。请帮助我让我的查询正常工作。

【问题讨论】:

  • 你运行的是什么版本的sql-server?兼容级别错误表明您需要将数据库兼容级别更新到至少 9 (2005)...
  • 我正在运行 SQL SERVER 2008 R2
  • 您尚未接受/评论 bluefeet 的回答。它正在提供您想要的输出。你还需要什么吗?

标签: sql sql-server datetime pivot crosstab


【解决方案1】:

如果您无法使用PIVOT 函数,那么您可以使用带有CASE 语句的聚合函数:

select empno,
  max(case when datepart(d, chkdate) = 10 
        then convert(char(5), ChkIn, 108) end) [10],
  max(case when datepart(d, chkdate) = 11 
        then convert(char(5), ChkIn, 108) end) [11],
  max(case when datepart(d, chkdate) = 12
        then convert(char(5), ChkIn, 108) end) [12]
from filesTA
where ChkDate Between '2012-10-10' and '2012-10-12'
group by empno

SQL Fiddle with Demo

如果您可以访问PIVOT,那么您的语法将是:

select empno, [10], [11], [12]
from
(
  select empno, datepart(d, chkdate) chkdate, 
    convert(char(5), ChkIn, 108) chkin
  from filesTA
) src
pivot
(
  max(chkin)
  for chkdate in ([10], [11], [12])
) piv

SQL Fiddle with Demo

【讨论】:

    【解决方案2】:

    如果您需要在兼容级别低于 90 的数据库上使用 PIVOT,它将无法正常工作。

    阅读此ALTER DATABASE Compatibility Level

    修改后的数据库兼容级别后,您的查询将如下所示

    ;WITH cte AS
     (
      SELECT EmpNo, CAST(ChkIn AS time) AS ChkIn, DATEPART(mm, ChkDate) as mm_ChkDate
      FROM filesTA
      WHERE ChkDate Between '2012-10-10' and '2012-10-12'
      )
    SELECT EmpNo, [10], [11], [12] FROM cte  
    PIVOT(
    MIN(ChkIn) FOR cte.mm_ChkDate IN ([10], [11], [12])) x
    

    【讨论】:

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