This tool extracts from WoWHead the data "starts" and "ends" (quest) from NPC and GameObject and generate the SQL code to insert into the database.
It accepts one or multiple entries. Tested with these entries: 43929, 294, 46901, 69742, 46908, 28701; one by one and all together.
294 because it has only starts quest69742 because it has only ends quest28701 because it has both starts and endsA video that shows how this tool works: https://www.youtube.com/watch?v=U7nCrJo9XEM