不能创建Memory Optimized Table

为DBTest增加了一个Memory Table FileGroup，但是在创建Memory Optimized Table时，出现error

Cannot create memory optimized tables in a database that does not have an online and non-empty MEMORY_OPTIMIZED_DATA filegroup.

USE [master]
GO
ALTER DATABASE [DBTest]
ADD FILEGROUP [MemoryTableGroup]
CONTAINS MEMORY_OPTIMIZED_DATA;
GO

USE [DBTest]
GO

--Drop table if it already exists.
IF OBJECT_ID(‘dbo.MemoryTable_test‘,‘U‘) IS NOT NULL
    DROP TABLE dbo.MemoryTable_test
GO

CREATE TABLE dbo.MemoryTable_test
(
    ID int not null ,
    name varchar(11) not null,
    age int not null,
    constraint PK__MemoryTable_Test
        primary key nonclustered hash(ID) with (bucket_count=1024)
)
WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_AND_DATA )
GO

查看MemoryTableGroup，其FileStream files的数量是0，需要为该FileGroup 添加File。

为MemoryTableGroup 添加一个File，Memory Table创建成功。

ALTER DATABASE [DBTest]
ADD FILE (name=‘DBTest_file1‘, filename=‘D:\MSSQLServerData\MSSQL12.MSSQLSERVER\MSSQL\DATA\DBTest_file1‘)
TO FILEGROUP [MemoryTableGroup]
GO

参考doc：

The Memory Optimized Filegroup

Cannot create memory optimized tables in a database on SQL Server 2014