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_272865_20 (years_active VARCHAR, asian_cup_played_as_a_captain VARCHAR)

### Question ###
What were the years active where Asian Cup played as a captain is Qatar 1988?

### Accurate SQL ###

SELECT years_active FROM table_272865_20 WHERE asian_cup_played_as_a_captain = "Qatar 1988"