Sql Server父子关系迭代查询SQL

类似ORACLE中的start with connect by prior语法。


说明：T_SYS_ORG机构表，字段:ROW_ID/PAR_ROW_ID，PAR_ROW_ID表示父机构的ROW_ID


--自上往下

WITH NODES   
 AS ( 
 SELECT * FROM DBO.T_SYS_ORG par WHERE par.ROW_ID='28'
 UNION ALL   
 SELECT child.* FROM T_SYS_ORG AS child INNER JOIN 
  NODES  AS RC ON child.PAR_ORG_ID = RC.ROW_ID)  
  SELECT * FROM T_SYS_ORG WHERE row_id IN (SELECT row_id  FROM NODES N )  ;

--自下往上

 
 WITH NODES   
 AS ( 
 SELECT * FROM DBO.T_SYS_ORG child WHERE child.ROW_ID='32'
 UNION ALL   
 SELECT par.* FROM T_SYS_ORG AS par INNER JOIN 
  NODES  AS RC ON par.row_id = RC.PAR_ORG_ID)  
  SELECT * FROM T_SYS_ORG WHERE row_id IN (SELECT row_id  FROM NODES N )  ;