Stockggtexmiddlerate
简述
港股通参考结算汇率，指定日结算汇率中间价
港股通(沪):FXHGTCNY
港股通(深):FXSGTCNY
Stockggtexmiddlerate():REAL
// "FXHGTCNY"港股通(沪)在截止日20210111T的结算汇率中间价
SetSysParam(pn_stock(),"FXHGTCNY");
SetSysParam(PN_Date(),20210111T);
return StockGGTExSellRate(); //0.8337