$virtualFields = array(
'difference' => 'HOUR(TIMEDIFF(end, start))'
); 

Cheers,
Graham Weldon
http://grahamweldon.com
e. gra...@grahamweldon.com
p. (+61) 0407 017 293
Skype: grahamweldon


On Tuesday, 15 November 2011 at 8:13 PM, Gerrit wrote:

> Hello,
> 
> I've start and end field as datetime in my database. Now I want to
> calculate the difference in hours as a virtual field. Is that
> possible??
> 
> Thx!
> 
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