setsysparam(pn_stock(),'SZ000002');
hq:=nday(20,'month',sp_time(),'daydif',close());
mmin:=nday(10,'month',sp_time(),'min',close());
hq:=select [1].*, [2].['min'] from hq right join mmin with
    ([1].['month'],[1].['daydif'] on [2].['month'],[2].['min']) end;
return hq;