Hi experts! I read this nice article about Understanding EXPLAIN  weeks ago that opened my mind about the tool, but it seems no enough to explain a lot of plans that I see in this list.
I often read responses to a plan that are not covered by the article. I need/want to know EXPLAIN better. Can you kindly advise me a good reading about advanced EXPLAIN? Thank you!  http://www.dalibo.org/_media/understanding_explain.pdf Flávio Henrique