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_23128 ( "Pick #" real, "Player" text, "Position" text, "Nationality" text, "NHL team" text, "College/junior/club team" text )

### Question ###
What's the number of positions of the player playing in Minnesota North Stars?

### Accurate SQL ###

SELECT COUNT("Position") FROM table_23128 WHERE "NHL team" = 'Minnesota North Stars'