三表联查
--A表 记录公司财务cw1 cw2 cw360000 200 2010-12-31--B表记录公司所属行业CW1 CW2 60000 银行--C表记录行业指标平均值cw1 cw2(毛利润平均值） CW3银行 121 2010-12-31
;with a as (select * from cw),b as (select * from hy),c as (select * from hyzb),d as (select a.dm as [代码],a.nawe as [名称] ,b.hy as [行业],a.data as [日期], (a.cw79-a.cw80)/a.cw79 as [毛利润-营业收入],(a.cw82+a.cw83)/(a.cw79-a.cw80)as [营销费用-毛利润] from ainner join b on a.dm=b.dminner join c on b.hy=c.hywhere (a.cw79-a.cw80)/a.cw79 >c.cw1 and a.cw79<>0and (a.cw82+a.cw83)/(a.cw79-a.cw80)> c.cw3and datepart(yyyy,a.data)=datepart(yyyy,c.data) and YEAR(a.data) IN (2008,2009,2010))select d.* from d where dm in(select dm from d group by dm having count(*)=3)order by d.hy,d.dm,d.data
