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_18 ( code__iata_icao_ VARCHAR, rank VARCHAR )

### Question ###
What is the code for rank 10?

### Accurate SQL ###

SELECT code__iata_icao_ FROM table_name_18 WHERE rank = 10