Getting the number of rows with a GROUP BY query

Question

I have a query to the effect of

SELECT t3.id, a,bunch,of,other,stuff FROM t1, t2, t3 
WHERE (associate t1,t2, and t3 with each other) 
GROUP BY t3.id 
LIMIT          


        

Answer 1

Using sub queries :

SELECT COUNT(*) FROM    
(
SELECT t3.id, a,bunch,of,other,stuff FROM t1, t2, t3 
WHERE (associate t1,t2, and t3 with each other) 
GROUP BY t3.id 
)    
as temp;

so temp contains the count of rows.