postgre 查询同表中的，该节点写的所有子节点

SELECT catalogid, foldername, parentid, folderpath
  FROM public.ic_catalog;

--查询同表中的，该节点写的所有子节点
WITH RECURSIVE T(catalogid,foldername,parentid) AS(
    SELECT catalogid,foldername,parentid FROM ic_catalog WHERE catalogid =19400
    UNION ALL
  SELECT T1.catalogid,T1.foldername,T1.parentid
   FROM ic_catalog T1 JOIN T ON T1.parentid=T.catalogid
)
SELECT catalogid,foldername,parentid FROM T