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_name_29 (giro_wins INTEGER, young_rider VARCHAR, jerseys VARCHAR, country VARCHAR)

### Question ###
what is the giro wins when jerseys is 2, country is portugal and young rider is more than 0?

### Accurate SQL ###

SELECT SUM(giro_wins) FROM table_name_29 WHERE jerseys = 2 AND country = "portugal" AND young_rider > 0