weiday / mysql_debugging_tools

mysql_debugging_tools

This tools include:

1. Print Item Tree: mysql exprtree <item_list>
2. Range MM Tree: mysql sel_tree
3. SELECT_LEX/SELECT_UNIT Tree : mysql qbtree
4. Table List : mysql tl <table_list>
5. Thread overview : thread overview
6. Thread search : thread search <search_key>