A query é:
OVNI_EUA_por_Estado = sqldf("select State, count(*) Views
from df_OVNI
group by state
order by 2 desc")
A mensagem de erro é: "Error in .local(drv, ...) : Failed to connect to database: Error: Access denied for user 'Czr'@'localhost' (using password: NO) Error in !dbPreExists : invalid argument type"
