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Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
CREATE TYPE
BEGIN
| relation | objid | locktype | mode |
|---|---|---|---|
| pg_locks | null | relation | AccessShareLock |
| null | null | virtualxid | ExclusiveLock |
| null | null | transactionid | ExclusiveLock |
SELECT 3
ALTER TYPE
| relation | objid | locktype | mode |
|---|---|---|---|
| pg_locks | null | relation | AccessShareLock |
| null | null | virtualxid | ExclusiveLock |
| null | my_enum | object | ExclusiveLock |
| null | null | transactionid | ExclusiveLock |
SELECT 4
COMMIT