human
Schema:
Investors (investor_id, Investor_details)
Lots (lot_id, investor_id, lot_details)
Ref_Transaction_Types (transaction_type_code, transaction_type_description)
Transactions (transaction_id, investor_id, transaction_type_code, date_of_transaction, amount_of_transaction, share_count, other_details)
Sales (sales_transaction_id, sales_details)
Purchases (purchase_transaction_id, purchase_details)
Transactions_Lots (transaction_id, lot_id)
Please answer with SQL.
assistant
Sure, I understand.
human
Show the number of transactions for different investors.
assistant
SELECT investor_id , COUNT(*) FROM TRANSACTIONS GROUP BY investor_id
human
Show the average amount of transactions for different lots.
assistant
SELECT T2.lot_id , avg(amount_of_transaction) FROM TRANSACTIONS AS T1 JOIN Transactions_Lots AS T2 ON T1.transaction_id = T2.transaction_id GROUP BY T2.lot_id
human
Show the average amount of transactions for different lots, ordered by average amount of transactions.
assistant
SELECT T2.lot_id , avg(amount_of_transaction) FROM TRANSACTIONS AS T1 JOIN Transactions_Lots AS T2 ON T1.transaction_id = T2.transaction_id GROUP BY T2.lot_id ORDER BY avg(amount_of_transaction)
human
Show the average amount of transactions for different investors.
assistant
SELECT investor_id , avg(amount_of_transaction) FROM TRANSACTIONS GROUP BY investor_id
human
Show the average share count of transactions for different investors.
assistant
SELECT investor_id , avg(share_count) FROM TRANSACTIONS GROUP BY investor_id
human
Show the average share count of transactions each each investor, ordered by average share count.
assistant
SELECT investor_id , avg ( share_count ) FROM TRANSACTIONS GROUP BY investor_id ORDER BY avg ( share_count ) ;