The question Do I need Transit visa for Germany, travelling from India to Poland via Germany with Polish D-Type National Visa? was asked and answered. The OP indicated in a comment to the single answer (at the time of this question) that it answered his question, although he has not yet marked it as accepted.
I was thinking of editing the question (and title), removing all specifics and making it extremely generic, but that would be a fairly large edit, and so am seeking opinions/approval/consensus here first.
My proposed edit would be somthing like:
Title: If I hold a Schengen-area Country's National D-Type (Long Stay) Visa, do I need a transit visa to travel through a second S-Area country?
The body of the message could be similarly edited. I was thinking this might be helpful in order to avoid duplicate questions of a similar nature. (My wording above is quick and dirty, and could/should be even further refined.)