SQL Server 2014上的跨数据库查询

Question

我有一个带有内存优化表的数据库。 我想将此表归档到另一个数据库中。 我想编写一个存储过程来做到这一点。

下面的示例1和2成功实现了我，但是在这些示例中，第一个数据库不在内存中，第二个数据库在内存中。 就我而言，第一个数据库在内存中，第二个数据库可以在内存中，也可以不在。

这是我的代码：

1-我的桌子：

USE [TestReport]
GO

/****** Object:  Table [dbo].[Report]    Script Date: 1/22/2018 4:40:04 PM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE TABLE [dbo].[Report]
(
    [ReportID] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [Year] [int] NOT NULL,
    [DayOfYear] [int] NOT NULL,
    [ProductType] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [ApplicationID] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [TotalSize] [bigint] NOT NULL DEFAULT ((0)),
    [TotalCount] [bigint] NOT NULL DEFAULT ((0)),
    [LastReportTimeSpan] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NULL,

INDEX [idx] NONCLUSTERED HASH 
(
    [ReportID],
    [DayOfYear]
)WITH ( BUCKET_COUNT = 131072),
CONSTRAINT [pk] PRIMARY KEY NONCLUSTERED HASH 
(
    [ReportID],
    [Year],
    [DayOfYear],
    [ProductType],
    [ApplicationID]
)WITH ( BUCKET_COUNT = 131072)
)WITH ( MEMORY_OPTIMIZED = ON , DURABILITY = SCHEMA_AND_DATA )

GO

2-简单的存储过程

CREATE PROCEDURE [dbo].[ArchiveReport]
WITH NATIVE_COMPILATION, SCHEMABINDING, EXECUTE AS OWNER
AS BEGIN ATOMIC WITH
(
 TRANSACTION ISOLATION LEVEL =  SNAPSHOT, LANGUAGE =  N'us_english'
)
     BEGIN
         DECLARE @currentdate DATETIME2;
         SET @currentdate = GETDATE();
        declare @maintainDay INT = 5

    INSERT  TestReportArchive.[dbo].Report
         SELECT [ReportID],
                [Year],
                [DayOfYear],
                [ProductType],
                [ApplicationID],
                [TotalSize],
                [TotalCount],
            [LastReportTimeSpan]
          FROM [dbo].[Report] 
         WHERE DATEADD(day, [DayOfYear] + @maintainDay, DATEADD(YEAR, [Year] - 1900, 0)) > @currentdate;

         DELETE FROM [dbo].[Report]
         WHERE DATEADD(day, [DayOfYear] + @maintainDay, DATEADD(YEAR, [Year] - 1900, 0)) > @currentdate;

     END;
END

3-简单的存储过程错误

Msg 4512, Level 16, State 3, Procedure ArchiveReport, Line 12
Cannot schema bind procedure 'dbo.ArchiveReport' because name 'TestReportArchive.dbo.Report' is invalid for schema binding. Names must be in two-part format and an object cannot reference itself.

TestReportArchive is my destination database

4-使用1和2 。 表变量的定义

USE [TestReport]
GO

/****** Object:  UserDefinedTableType [dbo].[MemoryType]    Script Date: 1/22/2018 4:35:14 PM ******/
CREATE TYPE [dbo].[MemoryType] AS TABLE(
    [ReportID] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [Year] [int] NOT NULL,
    [DayOfYear] [int] NOT NULL,
    [ProductType] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [ApplicationID] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NOT NULL,
    [TotalSize] [bigint] NOT NULL,
    [TotalCount] [bigint] NOT NULL,
    [LastReportTimeSpan] [nvarchar](50) COLLATE Latin1_General_100_BIN2 NULL,
    INDEX [idx] NONCLUSTERED HASH 
(
    [ReportID],
    [DayOfYear]
)WITH ( BUCKET_COUNT = 131072)
)
WITH ( MEMORY_OPTIMIZED = ON )
GO

5-具有表变量的存储过程

CREATE PROCEDURE [dbo].[ArchiveReport]
WITH NATIVE_COMPILATION, SCHEMABINDING, EXECUTE AS OWNER
AS BEGIN ATOMIC WITH
(
 TRANSACTION ISOLATION LEVEL =  SNAPSHOT, LANGUAGE =  N'us_english'
)
     BEGIN
         DECLARE @currentdate DATETIME2;
         SET @currentdate = GETDATE();
        declare @maintainDay INT = 5

         DECLARE @InMem [dbo].[MemoryType];

        INSERT @InMem
        SELECT [ReportID],
                [Year],
                [DayOfYear],
                [ProductType],
                [ApplicationID],
                [TotalSize],
                [TotalCount],
            [LastReportTimeSpan]
         FROM [dbo].[Report] 
         WHERE DATEADD(day, [DayOfYear] + @maintainDay, DATEADD(YEAR, [Year] - 1900, 0)) > @currentdate;
         INSERT  TestReportArchive.[dbo].[Report]
         SELECT [ReportID],
                [Year],
                [DayOfYear],
                [ProductType],
                [ApplicationID],
                [TotalSize],
                [TotalCount],
            [LastReportTimeSpan]
         FROM @InMem

         DELETE FROM [dbo].[Report]
         WHERE DATEADD(day, [DayOfYear] + @maintainDay, DATEADD(YEAR, [Year] - 1900, 0)) > @currentdate;

     END;
END

6-5个存储过程出错

Msg 4512, Level 16, State 3, Procedure ArchiveReport, Line 25
Cannot schema bind procedure 'dbo.ArchiveReport' because name 'TestReportArchive.dbo.Report' is invalid for schema binding. Names must be in two-part format and an object cannot reference itself.

TestReportArchive is my destination database

Answer 1

不支持涉及内存优化表的跨数据库查询。

内存中OLTP不支持的SQL Server功能

如果查询使用内存优化表或本机编译的存储过程，则该查询无法访问其他数据库。 此限制适用于事务以及查询。

Answer 2

最终，我在testReport（第一个数据库）上创建了一个非内存优化表（ReportTemp），并更改了存储过程以将数据从Report Table插入第一个数据库中的ReportTemp Table。 然后，我编写另一个SP将数据移至存档数据库。