Oracle 语句递归查找父子关系语句

--通过根节点遍历子节点
select t.*,level from family t start with parentid=1 connect by prior id=parentid;

--通过子节点向根节点追溯
select t.*,level from family t start with id=5 connect by prior parentid=id;

--查找直接子节点（下一层）
select t.*,level from family t where level = 2 start with parentid=1 connect by prior id=parentid;

--查找直接父节点（上一层）
select t.*,level from family t where level = 2 start with id=5 connect by prior parentid=id;

--通过根节点遍历子节点
select level,t.* from ORG_DEPARTMENT_INFO t start with parent_id=-1 connect by prior dept_id=parent_id;
--查找直接子节点（下一层）
select level,t.* from ORG_DEPARTMENT_INFO t where level = 2 start with parent_id=-1 connect by prior dept_id=parent_id;
--通过子节点向根节点追溯
select level,t.* from ORG_DEPARTMENT_INFO t start with dept_id=10000260 connect by prior parent_id=dept_id;
--查找直接父节点（上一层）
select level,t.* from ORG_DEPARTMENT_INFO t where level = 2 start with dept_id=10000260 connect by prior parent_id=dept_id;
--查找直接父节点（上一层）
select t.* from ORG_DEPARTMENT_INFO t where level = 2 start with dept_id=10000260 connect by prior parent_id=dept_id;

--通过根节点向子节点追溯

select level, t.*from SM_ORGANIZATION t start with t.org_id='114e0e3c-dbd1-4c2e-9d10-d5fd1e243961' connect by prior org_id=parent_id;
--通过子节点向根节点追溯
select level, t.*  from SM_ORGANIZATION t start with org_id='9e67e1f4-f4b0-4669-b4e1-1dca132bb4d7' connect by prior parent_id=org_id;