Why some number of element id keep empty even the greater number has been used E.g. https://www.openstreetmap.org/node/6358775424 Not found but +1000 https://www.openstreetmap.org/node/6358776424 Is used, as one node that part of the way with id 679072985, tagged as barrier=hedge by Ninjoh on 2019-03-24T17:46:52Z Why some number keep from uses? Thanks for explaining. asked 04 Sep '22, 14:40  MY5DVrAr0e59... |
One Answer:
This is an internal implementation detail in the way PostgreSQL manages its unique sequences. Sometimes new IDs are assigned but then not used e.g. because of a transaction rollback or other technical reasons. Therefore, our documentation makes no assurances about IDs other than that they are unique. They can have gaps, and it can even be possible that an object with a smaller ID is created after an object with a larger ID. answered 04 Sep '22, 18:49  Frederik Ramm ♦ |
