On 2019-Jun-07, Peter Geoghegan wrote: > On Thu, Jun 6, 2019 at 3:00 PM David Rowley > <david.row...@2ndquadrant.com> wrote: > > You may already be aware, but another use case for such variable-width > > identifiers was with indirect indexes as discussed in [1] > > Right. I went with global indexes because indirect indexes are > probably a lot more risky as a project. I'd be particularly concerned > about the complexity of VACUUM there, whereas that doesn't seem all > that bad in the case of global indexes.
I think vacuuming for global indexes is somewhat challenging as well :-) Maybe not as much as for indirect indexes, that's true. In order for it to be sustainable, I think you'll want to reuse partition identifiers when the partitions are dropped/detached, which means that you need a way to ensure that index entries to those partitions are removed from all indexes. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
