创建内存表时出错

Question

我正在尝试在内存中创建一个表，但它不断给我错误，例如：

Msg 10794, Level 16, State 85, Line 11 索引选项'pad_index'是 内存优化表上的索引不支持。

另一个人对主键集群说同样的话。

上面这两个东西（pad_index 和 PK Clustered）是必需的，除非有其他方法可以让它工作......

[DEMO-Training1] 
GO

/****** Object: Table [dbo].[wtAssetChildren] ******/ 
SET ANSI_NULLS ON GO

SET QUOTED_IDENTIFIER ON GO

CREATE TABLE [dbo].[wtAssetChildren] ( 
  [wtAssetChildrenID] [int] IDENTITY(1,1) NOT NULL, 
  [wtGUID] [uniqueidentifier] NOT NULL, 
  [CallingAssetID] [int] NOT NULL, 
  [AssetID] [int] NOT NULL, 
  [Processed] [bit] NOT NULL, 
  CONSTRAINT [PK_wtAssetChildren] PRIMARY KEY CLUSTERED ([wtAssetChildrenID] ASC)
  WITH (
    PAD_INDEX = OFF, 
    STATISTICS_NORECOMPUTE = OFF, 
    IGNORE_DUP_KEY = OFF, 
    ALLOW_ROW_LOCKS = ON, 
    ALLOW_PAGE_LOCKS = ON
  ) ON [PRIMARY] 
) ON [PRIMARY]

GO

ALTER TABLE [dbo].[wtAssetChildren] 
ADD CONSTRAINT [DF_wtAssetChildren_Processed] DEFAULT ((0)) FOR [Processed] GO

Answer 1

内存中 OLTP 表相对于 MS SQL 通常附带的其他内容有很多限制。查看http://msdn.microsoft.com/en-us/library/dn246937.aspx 获取完整列表。

例如，不支持集群 PK。您必须改用非聚集主键索引。

Answer 2

以下是如何在内存优化的 SQL Server 2014 中创建此表的示例。请注意，您可以，并不意味着您应该这样做。您提到您是初学者，内存优化表更像是一个高级选项。

CREATE DATABASE MemoryOptimizedTest;
GO

ALTER DATABASE MemoryOptimizedTest
    ADD FILEGROUP MemoryOptimizedTest_MemoryOptimized
    CONTAINS MEMORY_OPTIMIZED_DATA;
GO

ALTER DATABASE MemoryOptimizedTest 
    ADD FILE (
          NAME = 'MemoryOptimizedTest__MemoryOptimized1'
        , FILENAME = 'D:\SqlDataFiles\MemoryOptimizedTest__MemoryOptimized1') 
    TO FILEGROUP MemoryOptimizedTest_MemoryOptimized;
GO

ALTER DATABASE MemoryOptimizedTest
    SET MEMORY_OPTIMIZED_ELEVATE_TO_SNAPSHOT=ON;
GO

USE MemoryOptimizedTest;
GO

CREATE TABLE [dbo].[wtAssetChildren](
       [wtAssetChildrenID] [int] IDENTITY(1,1) NOT NULL
     , [wtGUID] [uniqueidentifier] NOT NULL
     , [CallingAssetID] [int] NOT NULL
     , [AssetID] [int] NOT NULL
     , [Processed] [bit] NOT NULL
        CONSTRAINT [DF_wtAssetChildren_Processed] DEFAULT ((0))
     , CONSTRAINT [PK_wtAssetChildren] PRIMARY KEY NONCLUSTERED( [wtAssetChildrenID] ASC )
     )
WITH (MEMORY_OPTIMIZED=ON, DURABILITY=SCHEMA_AND_DATA);