Show the maximum and minimum share count of different transaction types.
SELECT transaction_type_code ,  max(share_count) ,  min(share_count) FROM TRANSACTIONS GROUP BY transaction_type_code
SELECT transaction_type_code ,  max(share_count) ,  min(share_count) FROM TRANSACTIONS GROUP BY transaction_type_code
[{'transaction_type_code': 'PUR', 'max(share_count)': '93191', 'min(share_count)': ''}, {'transaction_type_code': 'SALE', 'max(share_count)': '96178', 'min(share_count)': ''}]