How to use server instance name as variable name in sql

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How to put server instance name dynamic in select statement used for linked server, below is my statement

SQL

SELECT  * FROM  [HOME-PC].SampleDB.dbo.Records WHERE Col_1_1=62 and Col_1_2=1

Now i want like below

SQL

declare @instancename nvarchar(50)
set @instancename='Home-PC'
SELECT  * FROM  [@instancename].SampleDB.dbo.Records WHERE Col_1_1=62 and Col_1_2=1

please suggest me..

Posted 29-Nov-14 20:48pm

Gopal Rakhal

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Comments

Tomas Takac 30-Nov-14 2:55am

4-part identifier? Why? Is this to connect to a linked server?

3 solutions

Solution 1

Build your sql string and finally execute it using sp_executesql
check this post : http://stackoverflow.com/questions/803211/how-to-get-sp-executesql-result-into-a-variable[^]

Posted 29-Nov-14 21:12pm

DamithSL

Comments

Maciej Los 30-Nov-14 4:58am

+5

Solution 2

See the two solutions given here: http://stackoverflow.com/questions/10170791/linked-server-query-dynamic-sql[^]. You can use a synonym[^] and/or dynamic query.

Posted 29-Nov-14 21:14pm

Zoltán Zörgő

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Maciej Los 30-Nov-14 4:58am

5

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Gopal Rakhal · Accepted Answer · 2014-12-01T18:05:00

I solved it by concatenating string and then execute

SQL

CREATE procedure [dbo].[GetRemoteData]
(
@District nvarchar(10),
@Vdc nvarchar(10),
@instanceName nvarchar(max),
@dbname nvarchar(max)
)
as
begin
declare @conInstanceName nvarchar(max)
declare @tablename nvarchar(max)
set @tablename='dbo.Records'
set @conInstanceName='['+@instanceName+']'+'.'+@dbname+'.'+@tablename
declare @SQLQUERY nvarchar(500)
set @SQLQUERY='select top 10 * from'+@conInstanceName
EXEC sp_executesql @SQLQUERY

end

How to use server instance name as variable name in sql

3 solutions

Solution 1

Solution 2

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