Your end-users may keep on complaining about some functions of their database application are running slow, but you may found that those SQL statements are already reached their maximum speed in the current MySQL and hardware configuration. There may be no way to improve the SQL unless you are willing to upgrade your hardware. To make your users feel better, sometimes, you don’t have to tune your SQL to run faster but to tune your SQL to run slower for certain application’s SQL statements....
How to Tune SQL Statements to Run SLOWER… but Make Users Feel BETTER (MySQL)?
How to Tune SQL Statements to Run SLOWER… but Make Users Feel BETTER (MySQL)?