在SQL Server 2005中的视图上创建全文索引

Question

我在SQL Server 2005中的视图上创建全文索引时遇到麻烦.查看文档我没有发现问题.我收到的错误消息是:"'Id'不是强制执行全文搜索键的有效索引.全文搜索键必须是唯一的,不可为空的单列索引,它不是脱机的,是未在非确定性或不精确的非持久计算列上定义,并且最大大小为900字节.为全文键选择另一个索引." 我已经能够验证errorstring中除了"离线"要求之外的所有要求,我不知道这意味着什么.我很确定它不会脱机.

我有脚本在下面创建目标表,视图和索引.我真的不需要下面的示例中的视图,它被简化,因为我试图隔离问题.

DROP VIEW [dbo].[ProductSearchView]
DROP TABLE [dbo].[Product2]
GO


SET NUMERIC_ROUNDABORT OFF;
SET ANSI_PADDING, ANSI_WARNINGS, CONCAT_NULL_YIELDS_NULL, ARITHABORT,
    QUOTED_IDENTIFIER, ANSI_NULLS ON;
GO

CREATE TABLE [dbo].[Product2](
    [Id] [bigint] NOT NULL,
    [Description] [nvarchar](max) NULL,
    CONSTRAINT [PK_Product2] PRIMARY KEY CLUSTERED 
    (
        [Id] ASC
    )WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE VIEW [dbo].[ProductSearchView] WITH SCHEMABINDING
AS
SELECT   P.Id AS Id,  
         P.Description AS Field
FROM [dbo].Product2 AS P
GO

-- this index may be overkill given the PK is set...
CREATE UNIQUE CLUSTERED INDEX PK_ProductSearchView ON [dbo].[ProductSearchView](Id)
GO

-- This is the command that fails
CREATE FULLTEXT INDEX ON [dbo].[ProductSearchView](Id, Field)
KEY INDEX Id
ON FullText WITH CHANGE_TRACKING AUTO;
GO

Answer 1

创建全文索引时,需要指定索引的名称而不是列名:

CREATE FULLTEXT INDEX ON [dbo].[ProductSearchView](Id, Field)
KEY INDEX PK_ProductSearchView
ON FullText WITH CHANGE_TRACKING AUTO;
GO

这将解决您获得的错误,但它会给您另一个错误,因为您试图在文本搜索中包含非基于字符的列.您可能希望选择另一个索引字符列以在全文目录中使用.