Subquery v/s inner join in sql server

Question

I have following queries

First one using inner join

SELECT item_ID,item_Code,item_Name 
FROM [Pharmacy].[tblitemHdr] I 
    INNER JOIN  EMR.tblFavour         


        

Answer 1

In Sql Server Management Studio you can enable "Client Statistics" and also Include Actual Execution Plan. This will give you the ability to know precisely the execution time and load of each request.

Also between each request clean the cache to avoid cache side effect on performance

USE ;
GO
CHECKPOINT;
GO
DBCC DROPCLEANBUFFERS;
GO

I think it's always best to see with our own eyes than relying on theory !