为什么下述代码执行报错：orders = select SecurityID,FactorID,FactorValue from loadTable("dfs://Factor10MinSH", "Factor10MinSH") where Date == keyword_date => Assignment statement failed probably due to invalid indices [orders = select SecurityID,FactorID,FactorValue from loadTable("dfs://Factor10MinSH", "Factor10MinSH") where Date == keyword_date]
keyword_date=2020.01.01
for (universe in ['SZ', 'SH']){
if(universe == 'SZ'){
orders = select SecurityID, FactorID, FactorValue
from loadTable("dfs://Factor10MinSZ", "Factor10MinSZ")
where Date = keyword_date
}
if(universe == 'SH'){
orders = select SecurityID, FactorID, FactorValue
from loadTable("dfs://Factor10MinSH", "Factor10MinSH")
where Date = keyword_date
}
undef(`orders)
}
