表结构： 代码如下: CREATE TABLE [dbo].[Xtest]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [XName] [nvarchar](50) NULL, [XDemo] [nvarchar](500) NULL, CONSTRAINT [PK_xtest] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE
