Today we are going to discuss if we should keep Optimize for Ad Hoc Workloads true or false. Let us see a detailed video about it.
Unlock SQL Login Without Changing the Password
Unlock SQL login accounts without a new password: switch CHECK_POLICY off and on. See the lockout, the fix, and what to do when MUST_CHANGE blocks it.
Avoid Join Hints – SQL in Sixty Seconds #172
Question: If they can change the join hints to improve the performance of the query. Well, the reality is that I always Avoid Join Hints.
Table Variables and Parallelism: Reads Yes, Inserts No
Table variables and parallelism: reads can run in parallel, inserts cannot. See the plan reason, the 1-row estimate at old levels, and when to use a temp table.
Group by Query Hash: Find One Query With Many Plans
Group by query hash to add up every cached copy of one query. See why the top query hides across entries in SQL Server.
One Query Many Plans – SQL in Sixty Seconds #171
After the blog post, lots of people asked me it will be more helpful if I can create a video on the same topic of one query many plans.
Same Query Plan, Different Cache Entry in SQL Server
The same query plan can sit in the cache many times when query text changes by a space, a letter case or a comment. See it, measure it and learn how to share one entry.