Task: Text to Code
Input (English): Step 1: For each row in bank table, find the corresponding rows in customer table.
Step 2: find the number of rows of each value of customer's state in the results of step 1.
Step 3: find bank's state of step 1 results with largest value in the results of step 2
Output (English): SELECT T1.state FROM bank AS T1 JOIN customer AS T2 ON T1.branch_ID = T2.branch_ID GROUP BY T2.state ORDER BY Count ( * ) Desc LIMIT 1