SQL Query Optimization | SQL Query Optimization and performance tuning

This is good and simple explanation but please do make it with sql query so that we can see a practical demo

hi,

what is the difference between query optimization and performance tuning with respect to sql query.
After checking execution plan what should be next step all mentioned above or do we need to check execution plan later .As we already know the issue how to approach to make sql query run faster.

Yes please do one video about index
Thanks for sharing knowledge

Thanks