MySql Multiple Averages -

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I have a table in which I have some prices for different types of hotel rooms. I want to ask. I get the average value of each room, however, mySQL gives me 1 average instead of 2, which I want. My code is as follows: 

  SELECT AVG (value) from `room` (ou = 'double') or (type = 'single');

I think my own statement is what I think is a bug .. 

  SELECT AGG (value), type` type` with `cell` type`

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