SQL 递归查询（根据指定的节点向上获取所有父节点,向下获取所有子节点）

--------------------01.向上查找所有父节点-----------------
WITH TEMP AS
(
SELECT * FROM CO_Department WHERE ID=11    --表的ID
UNION ALL
SELECT T0.* FROM TEMP,CO_Department T0 WHERE TEMP.ParentID=T0.ID    --父级ID==子级ID
)
SELECT * FROM TEMP;

如图:根据"测试组"查找所有父节点

执行结果:

--------------------02.向下查找所有子节点----------------------------
WITH TEMP AS
(
SELECT * FROM CO_Department WHERE ID=11   --表的ID
UNION ALL
SELECT T0.* FROM TEMP,CO_Department T0 WHERE TEMP.ID=T0.ParentID    --子级ID==父级ID
)
SELECT * FROM TEMP;

如图:根据"开发组"查找所有子节点

执行结果: