Calculate execution time of a SQL query?

Question

I am providing search functionality in my website, when user searches a record then I want to display the time the query taken to get the results same as google does. When we search anything then google displays how much time it takes to get results?

For this I have declared a @start variable in my SP and finding the difference in the end, as below;

DECLARE @start_time DATETIME

SET @start_time = GETDATE()

-- my query
SELECT * FROM @search_temp_table

SELECT RTRIM(CAST(DATEDIFF(MS, @start_time, GETDATE()) AS CHAR(10))) AS 'TimeTaken'

Is there any other easy and fast way, or a single line of query with which we can find out the time a query taken to execute?

I'm using SQL2005.

Answer 1

Why are you doing it in SQL? Admittedly that does show a "true" query time as opposed to the query time + time taken to shuffle data each way across the network, but it's polluting your database code. I doubt that your users will care - in fact, they'd probably rather include the network time, as it all contributes to the time taken for them to see the page.

Why not do the timing in your web application code? Aside from anything else, that means that for cases where you don't want to do any timing, but you want to execute the same proc, you don't need to mess around with something you don't need.

Answer 2

We monitor this from the application code, just to include the time required to establish/close the connection and transmit data across the network. It's pretty straight-forward...

Dim Duration as TimeSpan
Dim StartTime as DateTime = DateTime.Now

'Call the database here and execute your SQL statement

Duration = DateTime.Now.Subtract(StartTime)
Console.WriteLine(String.Format("Query took {0} seconds", Duration.TotalSeconds.ToString()))
Console.ReadLine()

Answer 3

Well, If you really want to do it in your DB there is a more accurate way as given in MSDN [http://msdn.microsoft.com/en-us/library/ms190287.aspx].

SET STATISTICS TIME ON

You can read this information from your application as well.