SDQL stands for Sports Data Query Language. It’s a database for researching trends and historical records in an unlimited number of situations. Watching the tutorial videos should be enough to get you started making queries. Membership is free and you only need to enter a user name and pass code to log in and start doing your own research. You can set up an account at http://sportsdatabase.com
Please adhere to their request for proper citing of the source for any trend you share.
Permission is given to quote trends found on SportsDataBase.com provided that a reference and a link to SportsDataBase.com is provided. E.g.: Trend found on SportsDataBase.com