work with pandas/io/sql.py patched

sql.py must be patched for this to work :
https://github.com/stonebig/pandasql/tree/working_with_list_and_patched_pandas
otherwise a table of ine column of integers fails :

df=pd.DataFrame([(1, 'the great'),('Ourgo' ,'the brave')], columns=['surname','pseudo'])
a=[1 , 2]
b=   {1: '2341', 2: '9102',3: '3258'}
sqldf("select  *  from  df inner join  a on surname=a.c0 inner join b on a.c0=b.c0    ", locals())