YQL (Yandex Query Language) is a universal declarative query language for data storage and processing systems, a dialect of SQL.
You can get started with YQL in the management console after you create a database. See Reading and writing data to learn about the basic operations with data.
Tutorial for beginners
The YQL tutorial provides examples of YQL instructions you can use to get familiar with the basic syntax and features of YQL. Use the management console when learning the tutorial: paste the instructions into the SQL query field and click Run.