Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE customer ( cust_name VARCHAR, acc_bal VARCHAR )

### Question ###
List the name of all customers sorted by their account balance in ascending order.

### Accurate SQL ###

SELECT cust_name FROM customer ORDER BY acc_bal