Stock_TransferSecuritiesAllowanceAmount
简述
指定日融券余量，与系统参数(证券代码、时间)相关
Stock_TransferSecuritiesAllowanceAmount ():real
// "SH600837"在20220811日融券余量
SetSysParam(pn_stock(),"SH600837");
SetSysParam(pn_date(),20220811T);
return Stock_TransferSecuritiesAllowanceAmount();
//结果： 91331700