Measuring Query Performance : “Execution Plan Query Cost” vs “Time Taken”

Question

I\'m trying to determine the relative performance of two different queries and have two ways of measuring this available to me:
1. Run both and time each query
2. Ru

Answer 1

Query Execution Time:

DECLARE @EndTime datetime
DECLARE @StartTime datetime 
SELECT @StartTime=GETDATE() 


` -- Write Your Query`

SELECT @EndTime=GETDATE()
--This will return execution time of your query
SELECT DATEDIFF(MILLISECOND,@StartTime,@EndTime) AS [Duration in millisecs] 

Query Out Put Will be Like:

To Optimize Query Cost :

Click on your SQL Management Studio

Run your query and click on Execution plan beside the Messages tab of your query result. you will see like