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_25831483_1 ( actor_actress VARCHAR, character VARCHAR, last_appearance VARCHAR, total VARCHAR )

### Question ###
Who was the actor/actress with a last appearance of 1 january 2010 and total is 20 and character is vanessa 'nessa' jenkins?

### Accurate SQL ###

SELECT actor_actress FROM table_25831483_1 WHERE last_appearance = "1 January 2010" AND total = 20 AND character = "Vanessa 'Nessa' Jenkins"