Question

I have a table Pet.Info like the following in SQL Server :

pet      age ...
--------------------
dog       4
cat       3
pig       2
dog       3
...

Now, I want to convert it into a table to calculate the average ages of dog and cat, and the average of all the others. Like the following:

dog    cat   others
-------------------------
3.5      3       2

Is it possible to do it with PIVOT?

Here is what I have get, but there seems no way to make it for the column of others

SELECT * FROM 
(SELECT * FROM Pet.Info) AS B
PIVOT (AVG(age) FOR pet IN ([dog],[cat])) AS C

Thanks for advises in advance.

Answer 1

Try this:

SELECT * 
FROM (  SELECT  CASE WHEN pet NOT IN ('dog','cat') THEN 'others' ELSE pet END pet, 
                age
        FROM Pet.Info) AS B
PIVOT (AVG(age) FOR pet IN ([dog],[cat],[others])) AS C