Are there any market data providers that provide a query language?
You can give YQL a try. I'm not sure it can do the query you want, but for example you can do: (try it here) And this best thing about it - it's free.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Are there any market data providers that provide a query language?

### Response:
You can give YQL a try. I'm not sure it can do the query you want, but for example you can do: (try it here) And this best thing about it - it's free.