Cyclical recursion in MySQL that can be used for DFS or BFS

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Just wanted to share these blogs,

http://guilhembichot.blogspot.com/2013/11/with-recursive-and-mysql.html
http://blogs.msdn.com/b/sqlazure/archive/2010/07/01/10033575.aspx
http://ilyasterin.com/blog/2014/01/cyclical-dependency-detection-in-the-database.html

Cheers ;-)

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