分段更新数据

--SELECT stuid  FROM dbo.BZList WHERE AreaOrganID=-1 AND AreaPointCode=-1 AND DeptOrganID=-1

 

SELECT bzid,stuid, BZKTypeID, BZKTypeName, BZDate, BZData, BZRemark, PointCode FROM dbo.BZList WHERE StuID =338180 ORDER BY BZDate
SELECT bzid,stuid, BZKTypeID, BZKTypeName, BZDate, BZData, BZRemark, PointCode  FROM dbo.BZList WHERE StuID =338180 AND BZKTypeCode=202 ORDER BY BZDate

WITH rs
    AS ( SELECT stuid AS n
      FROM  dbo.BZList
      WHERE AreaOrganID = -1
      AND AreaPointCode = -1
      AND DeptOrganID = -1
    )
 SELECT 
   bzid,stuid, BZKTypeID, BZKTypeName, BZDate, BZData, BZRemark, PointCode,
   ISNULL(( SELECT TOP 1
       BZRemark
      FROM dbo.BZList b2
      WHERE b1.stuid=b2.stuid
       AND BZKTypeName = '转学'
       AND b2.BZDate > b1.BZDate
       ), b1.PointCode)
 FROM dbo.BZList b1
 WHERE EXISTS ( SELECT TOP 1 1  FROM rs  WHERE n = StuID )
 ORDER BY stuid,b1.BZDate