Question

在我的一个较大的表中，旧记录被移动到以季度和年份为后缀的单独表中。例如，SILO_q1_2014

对于历史查询，我通常使用包含当前表和所有历史表的视图。这将包括上一季度，例如q2_2014，但是一旦我们进入2014Q4并且创建了新的q3_2014表，它将会过时。

那么最好的方法是保持这个视图与最新季度的最新信息是什么？表吗

ALTER VIEW [dbo].[v_SILO]
AS
    SELECT     *
    FROM         dbo.SILO
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q2_2014
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q1_2014
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q4_2012
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q3_2012
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q2_2012
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q1_2012
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q4_2011
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q3_2011
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q2_2011
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q1_2011
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q4_2010
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q3_2010
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q2_2010
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q1_2010
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q4_2009
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q3_2009
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q2_2009
    WHERE     active_flag = 1
    UNION ALL
    SELECT     *
    FROM         dbo.SILO_q1_2009
    WHERE     active_flag = 1

GO

注意：这是在 SQL 2000 db

中

Answer 1

假设您有一个标准的命名约定，您可以创建一个存储过程，该过程将丢弃并重新创建视图以包含当前季度。然后，将该存储过程作为预定作业放在每月运行一次的SQL Server中。

在VIEW中连接具有各种后缀的历史表

1 个答案: