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 ( dept_code VARCHAR, stu_hrs INTEGER )

### Question ###
Find the total number of hours have done for all students in each department.

### Accurate SQL ###

SELECT SUM(stu_hrs), dept_code FROM student GROUP BY dept_code