i can manage the MySQL queries into active record.but in some cases 
basically with sub-queries.i didn't get the correct output.
here when i trying to change the MySQL queries into active-record.

*MySQL Query*

*select count(*) from ( SELECT transactions.loyalty_id FROM transactions 
JOIN loyalties ON (transactions.loyalty_id = loyalties.id) where 
loyalties.created_at > '2011-11-02' GROUP BY transactions.loyalty_id HAVING 
COUNT(*)>1 ) as t*

Here just i tried to convert into corresponding active record queries. But 
i didn't get the correct output.

*Transaction.count(:loyalty_id) , :joins=> ["JOIN loyalties ON 
(transactions.loyalty_id = loyalties.id)" ] , :conditions => 
["loyalties.created_at > ? ",cdate], :group=> ["transactions.loyalty_id"], 
:having=> ["count(*) > 1 "] )*

How to change that issue?

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