Profiler Vs SET STATISTICS IO / TIME

Sep 2, 2004

This morning i was profiling two queries to see if the changes i've done were improving it.

So i firstly used the usual SET STATISTIC IO ON.

This is the result on the First and the Second queries:

(681 row(s) affected)

Table 'WEB_NewsletterSubscription'. Scan count 2724, logical reads 5452, physical reads 0, read-ahead reads 0.
Table 'WEB_ProductRegistration'. Scan count 2724, logical reads 5456, physical reads 0, read-ahead reads 0.
Table 'WEB_Journalist'. Scan count 2724, logical reads 5456, physical reads 0, read-ahead reads 0.
Table 'WEB_User'. Scan count 4, logical reads 292, physical reads 0, read-ahead reads 0.

(681 row(s) affected)

Table 'WEB_NewsletterSubscription'. Scan count 2076, logical reads 4335, physical reads 0, read-ahead reads 0.
Table 'WEB_ProductRegistration'. Scan count 2043, logical reads 4231, physical reads 0, read-ahead reads 0.
Table 'WEB_Journalist'. Scan count 2043, logical reads 4092, physical reads 0, read-ahead reads 0.
Table 'WEB_User'. Scan count 3, logical reads 219, physical reads 0, read-ahead reads 0.

From what I see i say that the Second is better.

So switched to profiler to be ever sure, and got this:

Event ClassCPUReadsWritesDur.
SQL:BatchCompleted SQL Query Analyzer******100418901301948572004-09-02 12:02:38.493
SQL:BatchCompleted SQL Query Analyzer******150448601701948572004-09-02 12:02:38.623

WHAT!??!
Now seems that the First is better!!!!

Who's joking me? Why two different reponses? Who is more reliable?

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