我试图用BDH
降序打印以下公式,但是“ sort”似乎不能正常工作:
library(Rblpapi)
con <- blpConnect()
opt <- c("sort" = "D")
bdh("MLISMBC LX Equity",c("FUND_TOTAL_ASSETS"),start.date="2020-01-01",end.date = "2020-03-02",options = opt)
Error in bdh_Impl(con,securities,fields,start.date,end.date,options,:Sub-element '(null)' does not exist