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_203_747 ( id number, "rank" number, "nation" text, "gold" number, "silver" number, "bronze" number, "total" number )

### Question ###
how many more gold medals must qatar win before they can earn 12 gold medals ?

### Accurate SQL ###

SELECT 12 - (SELECT "gold" FROM table_203_747 WHERE "nation" = 'qatar')