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_15294880_2 ( stage VARCHAR, winner VARCHAR, points_classification VARCHAR )

### Question ###
How many stages were there where the winner and the points classification were Alberto Contador?

### Accurate SQL ###

SELECT COUNT(stage) FROM table_15294880_2 WHERE winner = "Alberto Contador" AND points_classification = "Alberto Contador"