Can't execute query

SELECT
		  	IDProdotto,
			nome_file,
			tipo_file
			
			FROM multimedia
		  
		  	WHERE multimedia.IDProdotto =  AND multimedia.tipo_file = 'extra'

MySQL Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND multimedia.tipo_file = 'extra'' at line 8

This script cannot continue, terminating.