摘要:
oracle中的select语句可以用START WITH...CONNECT BY PRIOR子句实现递归查询,connect by 是结构化查询中用到的,其基本语法是:select ... from <TableName> where <Conditional-1>start with <Conditional-2>connect by <Conditional-3>;<Conditional-1>:过滤条件,用于对返回的所有记录进行过滤。<Conditional-2>:查询结果重起始根结点的限定条件。<Cond 阅读全文