Using dictionary values in pandasql

问题

I have a dictionary that has dataframes in values, something like this -

mydict = {'demand': demand_df, 'supply':supply_df, 'prod': prod_df}

Then I am using pandasql module to execute a simple query.

query = "SELECT * FROM mydict['demand']"
print(ps.sqldf(query))

This is giving out an error -

AttributeError: 'dict' object has no attribute 'index'

However, if I add an extra step, it does work -

demand = mydict['demand']
query = "SELECT * FROM demand"
print(ps.sqldf(query)) 

How do I work with the first option above?

来源：https://stackoverflow.com/questions/51686216/using-dictionary-values-in-pandasql