使用SQL脚本填充时间维度-Teradata

各位

我正在尝试用SQL脚本填充时间维度表

预期输出如下所示

&下面是未提供正确输出的部分SQL脚本

SEL   calendar_date AS DATE_,
      RANK( ) OVER ( ORDER BY calendar_date) AS Date_Key,
      RANK( ) OVER ( ORDER BY EXTRACT(MONTH FROM CALENDAR_DATE)) AS Month_Key
FROM  SYS_CALENDAR.CALENDAR 
ORDER BY calendar_Date

你能帮我找到代码中的问题吗

由于代码在Month\u Key population中被阻塞，我还没有完成重新生成代码…

将

RANK（）更改为Month\u Key（按提取顺序（从日历日期算起的月份））
以使用
densite\u RANK
，因为看起来一年中一个月的所有行都应该具有相同的键

SEL   calendar_date AS DATE_,
  RANK() OVER (ORDER BY calendar_date) AS Date_Key,
  DENSE_RANK() OVER (ORDER BY EXTRACT(YEAR FROM CALENDAR_DATE),EXTRACT(MONTH FROM CALENDAR_DATE)) AS Month_Key
FROM  SYS_CALENDAR.CALENDAR 
ORDER BY calendar_Date

当你有
sys\u calendar.calendar

select      calendar_date

           ,day_of_calendar     - 32872     as day_key
           ,month_of_calendar   -  1080     as month_key
           ,quarter_of_calendar -   360     as quarter_key
           ,year_of_calendar    -  1989     as year_key

from        sys_calendar.calendar 

-- where       calendar_date between date '2015-09-25' and date '2015-10-05'

-- order by    calendar_date


到底怎么了？您是否担心排名跳过数字或其他问题？基本上，我正在尝试使用SQL脚本构建一个时间维度，它也将对Teradata和SQL Server有用（尽管脚本中可能需要进行细微的语法更改）。。。。在提供的答案中，我不确定您为什么要从列中减去数字？例如：-日历的第天-32872作为第天，Teradata日历表从1900-01-01开始。减法是为了使它与您所需的结果相匹配
+---------------+---------+-----------+-------------+----------+
| calendar_date | day_key | month_key | quarter_key | year_key |
+---------------+---------+-----------+-------------+----------+
| 2015-09-25    | 9,399   |       309 |         103 |       26 |
| 2015-09-26    | 9,400   |       309 |         103 |       26 |
| 2015-09-27    | 9,401   |       309 |         103 |       26 |
| 2015-09-28    | 9,402   |       309 |         103 |       26 |
| 2015-09-29    | 9,403   |       309 |         103 |       26 |
| 2015-09-30    | 9,404   |       309 |         103 |       26 |
| 2015-10-01    | 9,405   |       310 |         104 |       26 |
| 2015-10-02    | 9,406   |       310 |         104 |       26 |
| 2015-10-03    | 9,407   |       310 |         104 |       26 |
| 2015-10-04    | 9,408   |       310 |         104 |       26 |
| 2015-10-05    | 9,409   |       310 |         104 |       26 |
+---------------+---------+-----------+-------------+----------+