//返回一组股票一段时间的行情数据
oV:=BackUpSystemParameters2();
setsysparam(pn_begt(),inttodate(20120801));
setsysparam(pn_endt(),inttodate(20121001));
setsysparam("TimeIndex",1);
return
QueryWithPeriod("","SZ000002;SZ000001;SH600000;SH600004",@True,"","收盘价",@close(),
"成交量",@vol(),
"成交金额",@amount());