摘要：
12[ START WITH condition ] CONNECT BY [ NOCYCLE ] conditionThe start with .. connect by clause can be used to select data that has a hierarchical relationship (usually some sort of parent->child (boss->employee or thing->parts).说明： 1. START WITH：告诉系统以哪个节点作为根结点开始查找并构造结果集，该节点即为返回记录中的最高节点。 2. 阅读全文