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 student (name VARCHAR, dept_name VARCHAR, tot_cred VARCHAR)

### Question ###
Find the name of the students and their department names sorted by their total credits in ascending order.

### Accurate SQL ###

SELECT name, dept_name FROM student ORDER BY tot_cred