Law / Can a student go in any other Schengen country with a Polish National Visa (D) [46]

Merged: Can i go to Schengen countries by Polish national visa?

hello all
first i want to send my greeting to all members on this helpful website
and i wish the best for you all

i just wanted to ask about something
im from Egypt and i want to visit Poland
so i entered to the polish embassy website
i found 2 types of visa
national visa
schengen visa
then i filled a form for national visa
and i have an appointment at the embassy of Poland in Cairo after 3 days

but i want to ask
can i go to schengen countries by polish national visa?
i mean
if i got the national visa for 90 days
when i go to poland
can i go to Germany or Italy or any other schengen countries ? or not?
plz i need help
thank you again :)

Law / Can a student go in any other Schengen country with a Polish National Visa (D) [46]

because i have a car agency
im searching for accessories for cars
so i want to search in poland
ad also in germany