YQL (Yahoo Query Language) is an expressive SQL-like language that lets you query, filter, and join data from Yahoo, Facebook, Google, Twitter, and a variety of other Web services. With YQL, you can read, write, and shape data across the Internet (in both XML and JSON formats) through simple REST requests, eliminating the need to learn how to use different APIs.
In order to access data in your application, you’ll need to get a Yahoo API key and configure it to use . You can do this by creating a project for your application.
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Learn how to use the API through descriptions of its queries and parameters. In addition, the documentation also inculdes sample code to help get you started.
Find questions that match your query.
List questions from one of our hundreds of categories, filtered by type. You'll need the category name or ID, which you can get from questionSearch.
Found an interesting question? getQuestion lists all the details for every answer to the question ID you specify, including the best answer, if it's been chosen. Get that question ID from questionSearch or getByCategory.
List questions from specific users on Yahoo! Answers. You'll need the user id, which you can get from any of the other services listed above.
Join the conversation on the developer forum to get help and touch base with other developers.