摘要: 递归withmyRecursionas(select*fromrecursionwhereid=1unionallselectr.*frommyRecursionm,recursionrwherem.id=r.pid)select*frommyRecursionPs:unionall不去重求并集很多... 阅读全文
posted @ 2016-01-10 23:03 世上最帅的程序员 阅读(847) 评论(2) 推荐(3) 编辑