Context: CREATE TABLE Financial_transactions (account_id VARCHAR); CREATE TABLE Accounts (account_name VARCHAR, account_id VARCHAR)
Question: Show the account name, id and the number of transactions for each account.
Answer: SELECT T2.account_name, T1.account_id, COUNT(*) FROM Financial_transactions AS T1 JOIN Accounts AS T2 ON T1.account_id = T2.account_id GROUP BY T1.account_id