[danso]

This looks very neat. I'm someone who deals with a lot of plaintext data from a variety of sources, and so I find using ack/grep and csvkit to be efficient enough for my purposes of exploration. I love using SQL and SQLite but rarely do it for "fun" -- that is, I'll use it when I've committed to building a project, but not for exploration. This seems like it could lighten the friction quite a bit.

If anyone from AWS is here: how is this used internally at Amazon?

[ktamura]

The real question to ask is, will Amazon contribute back to open source? Presto itself is plenty proven and scalable: after all, it was created at Facebook.