hi guys, there's a internal mysql/mariadb developer course? i'm studying source, but it's a bit difficult understand what's the best class/methods to use, maybe a course could help me developing and understanding better the source
any one know about a course like it?
i will focus on query rewrite (select.cc), optimizer (opt_range.cc/opt_*) and partition engine, others engine (myisam,heap,innodb,aria) is not my priority now

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Roberto Spadim