Hi folks,I'm curious if there are any docs supporting the functionality behind dropping
unique constraints. For context, I am interested in enforcing uniqueness on a column.
This table is heavily used, and I plan on dropping the constraint in the future. I wanted
to avoid using a unique index since dropping them requires an exclusive lock and cannot
be done concurrently. My thought was to then use a unique constraint, since I've read
unofficial docs[0] that say these can be dropped safely with no lock.However, since a
unique index would be the backing index to the unique constraint, I'm curious how this
would work in practice (or if it even does!). Specifically if my theory of: "I can
use a unique constraint to avoid obtaining an exclusive lock on my table" actually
works.Thanks for any and all information, it's greatly appreciated, and apologies if I
missed any existing documentation.Best, CSB0:
https://leopard.in.ua/2016/09/20/safe-and-unsafe-operations-postgresql#.ZAEFpezMJLR
