Horton

Explain dropdb can't use syscache because of TOAST

Tomas Vondra <tomas.vondra@postgresql.org>

View on postgr.es
Commit: 3acbe198e2ad0f7d790d04f87c662ee26738536a
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Date: 2024-08-19T11:47:07Z
Releases: 14.14 
Explain dropdb can't use syscache because of TOAST

Add a comment explaining dropdb() can't rely on syscache. The issue with
flattened rows was fixed by commit 0f92b230f88b, but better to have
a clear explanation why the systable scan is necessary. The other places
doing in-place updates on pg_database have the same comment.

Suggestion and patch by Yugo Nagata. Backpatch to 12, same as the fix.

Author: Yugo Nagata
Backpatch-through: 12
Discussion: https://postgr.es/m/CAJTYsWWNkCt+-UnMhg=BiCD3Mh8c2JdHLofPxsW3m2dkDFw8RA@mail.gmail.com

Files

PathChange+/−
src/backend/commands/dbcommands.c modified +3 −1

Discussion