endt:=20250711T;
//--取数据：指定日A股的行业与当日涨幅
setsysparam(pn_date(),endt);
stocks:=getAbkbydate("A股",endt);
arr:= select thisrow as "StockID",spec(StockSWIndustryName1(),thisrow) as 'hy',
      spec(stockzf3(),thisrow) as 'zf'
   from stocks end;
//--分组并排序，而后取每个行业的前三只
t:=array();//存放前三只股票
//通过select+group by对arr进行分组并循环取每组排序后的前三只，合并到t数组中
select t&=select drange(0 to 2)* from thisgroup order by ['zf'] desc end
from arr group by ['hy'] end;
return t;