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_1965650_7 (nhl_team VARCHAR, player VARCHAR)

### Question ###
How many teams have a player named Denis Andersen?

### Accurate SQL ###

SELECT COUNT(nhl_team) FROM table_1965650_7 WHERE player = "Denis Andersen"