Compare table variable deferred compilation at compatibility levels 140 and 150, then decide when a temporary table gives better estimates.
SQL SERVER – Parameter Sniffing and OPTIMIZE FOR UNKNOWN
I consider myself fortunate that I receive a follow-up question from my blog posts. Let’s discuss Parameter Sniffing and OPTIMIZE FOR UNKNOWN.
Why Execution Plan Operator Read More Rows Than Available? – Interview Question of the Week #255
Question: Why Execution Plan Operator Read More Rows Than Available?
Answer: Statistics.
Now let us learn detailed answer in this blog post.
What is the Priority of Database Scoped Configurations? – Interview Question of the Week #254
Question: What is the Priority of Database Scoped Configurations over Global Configuration at Server Level?
Answer: This is a follow-up question.
Why Query Cost Percentages in a Plan Mislead You
Test why query cost percentages are estimates by comparing two statements with STATISTICS IO, TIME, and query DMV counters.
Comparing a Good and a Bad Plan for One Query in Query Store
Compare a good and a bad plan in Query Store using runtime history, SSMS Compare Showplan, estimates, joins, grants, and parallelism.
How to Disable Batch Mode in SQL Server? – Interview Question of the Week #252
My immediate reaction was why would you disable batch mode in SQL Server when it is really is an awesome feature for performance