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cpat258
Starting Member

USA
3 Posts
Posted - 11/10/2012 :  19:39:06  Show Profile  Reply with Quote
I have to list the average student reviewers’ age by gender. I can get them individually but how do i put them together so i have one code and not two separate ones?

SELECT AVG(Age) FROM Viewer WHERE Occupation='student' AND Gender='M';
SELECT AVG(Age) FROM Viewer WHERE Occupation='student' AND Gender='F';



Chirag Patel

sunitabeck
Flowing Fount of Yak Knowledge

5152 Posts
Posted - 11/11/2012 :  07:11:51  Show Profile  Reply with Quote
You can include the conditions in the where clause in a case expression. Be sure to not include an else clause in the case expression.
select 
	avg(case when Occupation='student' AND Gender='M' then Age end) as AvgMStudent,
	avg(case when Occupation='student' AND Gender='F' then Age end) as AvgFStudent
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