错误添加索引到的图

Question

我已经创建使用以下代码的图

CREATE VIEW dbo.two_weeks_performance WITH SCHEMABINDING
AS 
  SELECT dbo.day_dim.date_time AS Date, 
         dbo.order_dim.quantity AS Target_Acheived
    FROM dbo.day_dim 
    JOIN dbo.order_fact ON dbo.day_dim.day_id = dbo.order_fact.day_id 
    JOIN dbo.branch_dim ON dbo.order_fact.branch_id = dbo.branch_dim.branch_id 
    JOIN dbo.order_dim ON dbo.order_fact.order_id = dbo.order_dim.order_id   
GROUP BY dbo.order_dim.quantity, dbo.day_dim.date_time` 

现在，当我使用：

CREATE UNIQUE CLUSTERED INDEX two_weeks_performance_I ON two_weeks_performance (Date)

我正在一个错误：

  因为其选择列表中不使用COUNT_BIG的正确用法

无法创建索引（）。考虑添加COUNT_BIG（*）来选择。

请帮我解决这个问题。

Answer 1

这个错误告诉你到底你必须做的事情。 - 添加COUNT_BIG（*）添加到您的选择列表

从创建索引视图：

  

如果指定GROUP BY，该视图   选择列表中必须包含   COUNT_BIG（*）的表达，并且该视图   定义不能指定HAVING，   ROLLUP，CUBE或GROUPING SETS。

CREATE VIEW dbo.two_weeks_performance WITH SCHEMABINDING
AS 
  SELECT dbo.day_dim.date_time AS Date, 
         dbo.order_dim.quantity AS Target_Acheived,
         COUNT_BIG(*) as Cnt 
    FROM dbo.day_dim 
    JOIN dbo.order_fact ON dbo.day_dim.day_id = dbo.order_fact.day_id 
    JOIN dbo.branch_dim ON dbo.order_fact.branch_id = dbo.branch_dim.branch_id 
    JOIN dbo.order_dim ON dbo.order_fact.order_id = dbo.order_dim.order_id   
GROUP BY dbo.order_dim.quantity, dbo.day_dim.date_time
GO
CREATE UNIQUE CLUSTERED INDEX two_weeks_performance_I ON two_weeks_performance (Date)