摘要：代码Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--倒树:必须是‘子’=prior‘父’(本身startwith的该条记录关键字段,也就是startwithOffspring='EVE'这条记录的offs... 阅读全文

摘要：demo场景，以oracle自带库中的表emp为例： 　　select ename,deptno from emp order by deptno; ENAMEDEPTNOCLARK10KING10MILLER10SMITH20ADAMS20FORD20SCOTT20JONES20ALLEN30BLAKE30MARTIN30JAMES30TURNER30WARD30 现在想要将同一部门的人给合并成... 阅读全文

摘要：代码Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/----树显示子结点select*from(selectb.*,row_number()over(partitionbyrownum-levelorderbyleveldesc)rn,level,rown... 阅读全文

摘要：代码Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--/*等价,相当于把每一条记录做为startwith来建立树必须有connectby,可以没有startwith*/selectCow,Bull,LPAD('',6*(Level-1))||Offspr... 阅读全文

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