order订单表，orderprduct订单商品表，area地区表
SELECT (a1.Name+a2.Name+a3.Name) AS areanaem,orderArea.AreaId,orderArea.number
FROM (SELECT a.areaid,COUNT(a.areaid) AS number
FROM (SELECT o.AreaId FROM order AS o LEFT JOIN dbo.OrderProduct AS op ON op.OrderNumber = o.Number WHERE o.areaid>0) AS a
GROUP BY a.areaid ) AS orderArea
LEFT JOIN dbo.Area AS a3 ON orderArea.AreaId=a3.ID
LEFT JOIN dbo.Area AS a2 ON a3.HeadID =a2.ID
LEFT JOIN dbo.Area AS a1 ON a2.HeadID = a1.ID
