Hierarchical queries in MySQL 1월 25, 2016 http://explainextended.com/2009/03/17/hierarchical-queries-in-mysql/ http://blog.naver.com/PostView.nhn?blogId=endstar7&logNo=100124603859&categoryNo=32&viewDate=¤tPage=1&listtype=0 자세한 내용 보기