There's been quite a bit of open source work in this space. https://github.com/dinedal/textql https://github.com/dinedal/textql runs queries against CSVs on the

There's been quite a bit of open source work in this space. https://github.com/dinedal/textql https://github.com/dinedal/textql runs queries against CSVs on the command line. http://sheetjs.com/sexql/ http://sheetjs.com/sexql/ runs queries against excel files in the web browser.