CREATE TABLE loan (branch_id VARCHAR(255), amount INTEGER); CREATE TABLE bank (bname VARCHAR(255), branch_id VARCHAR(255))
Find the name of bank branch that provided the greatest total amount of loans.
    
SQL: SELECT T1.bname FROM bank AS T1 JOIN loan AS T2 ON T1.branch_id = T2.branch_id GROUP BY T1.bname ORDER BY SUM(T2.amount) DESC LIMIT 1