When the winner was Alessandro Ballan, how many total team classifications were there?
CREATE TABLE table_15294880_2 (team_classification VARCHAR, winner VARCHAR)
SELECT COUNT(team_classification) FROM table_15294880_2 WHERE winner = "Alessandro Ballan"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15294880_2 (team_classification VARCHAR, winner VARCHAR) Question: When the winner was Alessandro Ballan, how many total team classifications were there? [/INST] SELECT COUNT(team_classification) FROM table_15294880_2 WHERE winner = "Alessandro Ballan" </s>