The CartoDB SQL Library by CartoDB allows developers to run SQL queries against CartoDB. This library requires postgres 9.0+, postgis 2.0+, GDAL 1.9.2+, the zip commandline tool, redis, node >=0.8.18, and npm >=1.2.1.
A little over a year ago, Google released a new product called Google Fusion Tables. Fusion Tables allows you to upload, merge, share, and visualize large tables of tabular data. Basically, we wanted to answer the question “I have a spreadsheet. I want to share it with people and create a map/bar chart/storyline/other visualization.” Google Spreadsheets, while powerful, couldn’t handle the 100 meg upload we allow for Fusion Tables. And, being Google, we also provided something for developers.