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 table_name_68 (round INTEGER, college VARCHAR, overall VARCHAR)

### Question ###
what is the round when the college is north carolina and the overall is more than 124?

### Accurate SQL ###

SELECT SUM(round) FROM table_name_68 WHERE college = "north carolina" AND overall > 124