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_26781017_1 ( motogp_winner VARCHAR, circuit VARCHAR )

### Question ###
Who are all the motogp winners when the circuit was Catalunya?

### Accurate SQL ###

SELECT motogp_winner FROM table_26781017_1 WHERE circuit = "Catalunya"