Recently during the on-demand consultation, I was asked a very interesting question about Stream Aggregate and Hash Aggregate.
One of the interesting question: Is it possible to Override Server’s Configuration of Max Degree of Parallelism? Of course, it is possible, let us read.
Today we see T-SQL Script to Identify TOP 10 Parallel Running Queries which I wrote as a part of my Comprehensive Database Performance Health Check.
Question: Do Stream Aggregate Operator Always Need Sort Operator?
Answer: Absolutely No.Before I explain this question a bit more in detail.
Is Stream Aggregate is Same as Gather Streams of Parallelism? – This was one of the brilliant questions I had received during my recent engagement.
I received quite a few interesting emails. One of the emails was about the Limitation of ENABLE_PARALLEL_PLAN_PREFERENCE Hint.
There are so many options you should experiment before you opt for query hint. Recently DBA asked me how to use query hint ENABLE_PARALLEL_PLAN_PREFERENCE.