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 players (country_code VARCHAR)

### Question ###
Find the codes of countries that have more than 50 players.

### Accurate SQL ###

SELECT country_code FROM players GROUP BY country_code HAVING COUNT(*) > 50