我正在尝试以降序方式打印以下公式,BDH
但“排序”似乎无法正常工作:
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