SQL Server 2014上的跨數據庫查詢

Question

我有一個帶有內存優化表的數據庫。 我想將此表歸檔到另一個數據庫中。 我想編寫一個存儲過程來做到這一點。

下面的示例1和2成功實現了我，但是在這些示例中，第一個數據庫不在內存中，第二個數據庫在內存中。 就我而言，第一個數據庫在內存中，第二個數據庫可以在內存中，也可以不在。

這是我的代碼：

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-簡單的存儲過程

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-簡單的存儲過程錯誤

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 。 表變量的定義

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-具有表變量的存儲過程

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個存儲過程出錯

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

不支持涉及內存優化表的跨數據庫查詢。

內存中OLTP不支持的SQL Server功能

如果查詢使用內存優化表或本機編譯的存儲過程，則該查詢無法訪問其他數據庫。 此限制適用於事務以及查詢。

Answer 2

最終，我在testReport（第一個數據庫）上創建了一個非內存優化表（ReportTemp），並更改了存儲過程以將數據從Report Table插入第一個數據庫中的ReportTemp Table。 然后，我編寫另一個SP將數據移至存檔數據庫。