How to Handle Dynamic Parameters in OPENROWSET Queries?

Dynamic Parameterization in OPENROWSET Queries

When attempting to utilize OPENROWSET queries that incorporate variables, many individuals encounter a common error involving "incorrect syntax near ' '." To resolve this issue, it is imperative to comprehend the limitations associated with variables in OPENROWSET queries.

In contrast to other database functions, OPENROWSET does not allow the direct inclusion of expressions or variables within its arguments. This means that you cannot dynamically construct the OPENROWSET statement using variables.

To circumvent this limitation, a suitable strategy is to create a dynamic SQL string that dynamically constructs the OPENROWSET statement. This string can then be executed using the EXEC statement. Here's an illustration:

Declare @ID int
Declare @sql nvarchar(max)
Set @ID=1
Set @sql='SELECT * 
FROM OPENROWSET(
               ''SQLNCLI'',
               ''DRIVER={SQL Server};'',
               ''EXEC dbo.usp_SO @ID =' + convert(varchar(10),@ID) + ''')'

-- Print @sql
 Exec(@sql)

In this example, a dynamic SQL string "@sql" is constructed based on the provided parameter "@ID." Subsequently, the EXEC statement executes this dynamic SQL string, effectively executing the desired OPENROWSET query with the specified parameter value.

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