I am surprised the article did not focus on Query Optimization/Query Manager. Last time I did a direct comparison between MySQL, Postgres and Oracle was a few y

I am surprised the article did not focus on Query Optimization/Query Manager. Last time I did a direct comparison between MySQL, Postgres and Oracle was a few years back. At that time, for very complicated queries, there was no comparison between Posgres and MySQL. Such queries will not come up in a startup environment, but could be a factor in Enterprise IT environments.