need help with sql query using Active Record plz

[eluser]Abu eldahab[/eluser]
Hello All, when i'm testing this query in phpmyadmin it's work fine

Code:

SELECT  `tariffdesc` , SUM(  `duration` ) AS duration, SUM(  `cost` ) AS cost, COUNT(  `id_call` ) AS id_call
FROM  `calls`
WHERE  `caller_id` =  'moh'
GROUP BY  `tariffdesc`

the problem i tried to use Active Recored to get same data from my table i failed to make it work


any help with this query ?

Regards