sql 递归子查询

select (SELECT (Case A1.AreaAbbr WHEN ‘‘ THEN A1.AreaName Else A1.AreaAbbr  END)+ ‘ ‘ FROM AreaLang A1
            WHERE (SELECT AreaNo FROM Area WHERE Area.AreaID= A1.AreaID) IN
            (SUBSTRING((SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID),1,1)+‘000000000000000‘
            ,SUBSTRING((SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID),1,4)+‘000000000000‘
            ,SUBSTRING((SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID),1,7)+‘000000000‘
            ,SUBSTRING((SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID),1,10)+‘000000‘
            ,SUBSTRING((SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID),1,13)+‘000‘
            ,(SELECT AreaNo FROM Area Where Area.AreaID=P.AreaID)) AND A1.LanguageID=1 --ORDER BY P.AreaNo
            FOR XML PATH(‘‘)
            )AS PICAreaName
           
            FROM Area P Where P.AreaNo=‘2011026017012004‘

sql 递归子查询

原文：http://www.cnblogs.com/qhy1277/p/4961770.html