如何在一个数据库同步而另一个数据库不同步的SQL Server中提高多数据库查询的性能

-- 创建链接服务器
EXEC sp_addlinkedserver 
   @server='LinkedServerName', 
   @srvproduct='', 
   @provider='SQLNCLI', 
   @datasrc='RemoteServerName';

-- 查询示例
SELECT * 
FROM LinkedServerName.DatabaseName.dbo.TableName;

-- 创建分布式视图
CREATE VIEW dbo.DistributedView AS
SELECT * 
FROM Server1.Database1.dbo.Table1
UNION ALL
SELECT * 
FROM Server2.Database2.dbo.Table2;

-- 创建分区表
CREATE PARTITION FUNCTION pf_Date (datetime)
AS RANGE RIGHT FOR VALUES ('2020-01-01', '2021-01-01');

CREATE PARTITION SCHEME ps_Date
AS PARTITION pf_Date
ALL TO ([PRIMARY]);

CREATE TABLE dbo.PartitionedTable (
    ID INT IDENTITY(1,1) PRIMARY KEY,
    DateColumn DATETIME NOT NULL,
    Data NVARCHAR(MAX)
) ON ps_Date(DateColumn);

-- 使用内存优化表
CREATE TABLE dbo.MemoryOptimizedTable (
    ID INT NOT NULL PRIMARY KEY NONCLUSTERED,
    Data NVARCHAR(MAX)
) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_ONLY);

-- 异步查询示例
DECLARE @AsyncQueryHandle UNIQUEIDENTIFIER;
EXEC sp_executesql @stmt = N'SELECT * FROM Server1.Database1.dbo.Table1',
                   @params = NULL,
                   @async_query_handle = @AsyncQueryHandle OUTPUT;

-- 等待查询完成
WAITFOR (@AsyncQueryHandle);