关于递归查询Oracle递归查询的主要命令为：select -> from -> where -> start with -> connect by-> order by举例说明：（树形结构）1.建立如下数据库drop table t_dept;create table t_dept (dept_i...
WITH B (FATHER,SON,ID,ALLINFO) AS (SELECT RTRIM(LTRIM(CHAR(A.ID)))|| CHAR(ROW_NUMBER() OVER(PARTITION BY ID)) AS FATHER, RTRIM(LTRIM(CHAR(A.ID)))|| CHAR(ROW_NUMBER() OVER(PARTITION BY...
SQL：select * from PT_ORG_INFO START WITH id='102' CONNECT BY PRIOR id=par_idView Code连表递归查询SQL：select info.* from PT_CAMERA_INFO infojoin (select * from PT_ORG_INFO START WITH id='102' CONNECT...
今天发现在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 start with cond1 connect by cond2 where con...
查询所有子节点 SELECT *FROM districtSTART WITH NAME ='巴中市'CONNECT BY PRIOR ID=parent_id
查询所有父节点 SELECT *FROM districtSTART WITH NAME ='平昌县'CONNECT BY PRIOR parent_i...
