Get Yahoo weather in celsius via their API

Question

Trying to make a query in YQL console. This one works fine:

select * from weather.forecast where woeid=1989965

But I want to get values in metric system (celsius), so I use this query:

select * from weather.forecast where woeid=1989965 and unit='c'

I get a null result:

{
 "query": {
  "count": 0,
  "created": "2016-03-28T01:46:08Z",
  "lang": "ru",
  "results": null
 }
}

I could convert values by myself, but I hope I can make it work out of the box...

Answer 1

Today I discovered, u='c' is worked. So, the answer for my own question would be:

select * from weather.forecast where woeid=1989965 and u='c'