Question

我正在处理索引，我还是有点新的。我想在现有的Northwind视图上创建一个名为“Products by Category”的索引，该索引基于CategoryName和ProductName列。但是我遇到了一个问题，按类别分类的产品不会让我这样做，因为那里有。名称中有一个空格，但是by会突出显示。无论如何都要让它消失，所以我会停止收到错误。

 CREATE INDEX IDX_categoryproducts
ON dbo.Products by catergory (CategoryName,ProductName)

Answer 1

编辑：刚刚注意到您正在使用Northwind。您需要更改视图定义以使其可转换为如下所示。

ALTER VIEW [dbo].[Products by Category] 
WITH SCHEMABINDING
AS
SELECT Categories.CategoryID,
       Categories.CategoryName, 
       Products.ProductID,
       Products.ProductName, 
       Products.QuantityPerUnit, 
       Products.UnitsInStock, 
       Products.Discontinued
FROM dbo.Categories INNER JOIN dbo.Products ON Categories.CategoryID = Products.CategoryID
WHERE Products.Discontinued <> 1

GO

CREATE UNIQUE CLUSTERED INDEX ix ON [dbo].[Products by Category] (CategoryID, ProductID)

CREATE NONCLUSTERED INDEX IDX_categoryproducts ON dbo.[Products by Category] (CategoryName,ProductName)

创建索引

1 个答案: