Show the id and details for the investors who have the top 3 number of transactions.
SELECT T2.investor_id ,  T1.Investor_details FROM INVESTORS AS T1 JOIN TRANSACTIONS AS T2 ON T1.investor_id  =  T2.investor_id GROUP BY T2.investor_id ORDER BY COUNT(*) DESC LIMIT 3
SELECT T2.investor_id ,  T1.Investor_details FROM INVESTORS AS T1 JOIN TRANSACTIONS AS T2 ON T1.investor_id  =  T2.investor_id GROUP BY T2.investor_id ORDER BY COUNT(*) DESC LIMIT 3
[{'investor_id': 3, 'Investor_details': 'd'}, {'investor_id': 19, 'Investor_details': 'l'}, {'investor_id': 18, 'Investor_details': 'w'}]