Databricks

The following doesn't work for me:%sql SELECT user_id, array_size(education) AS edu_cnt FROM users ORDER BY edu_cnt DESC LIMIT 10; I get an error saying: Error in SQL statement: AnalysisException: Undefined function: array_size. This function is nei...

When using the Community Edition, I'm trying to find a place in the UI where I can browse the files that I've uploaded to dbfs. How/where can I do that? When I try to view them from the Data sidebar I see nothing, yet I know they're there, as if I us...