| From: | Jeff Davis <jdavis(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Fix broken hash function hashbpcharextended(). |
| Date: | 2022-12-02 22:15:48 |
| Message-ID: | E1p1EJv-001koD-LR@gemulon.postgresql.org |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers |
Fix broken hash function hashbpcharextended().
Ignore trailing spaces for non-deterministic collations when
hashing.
The previous behavior could lead to tuples falling into the wrong
partitions when hash partitioning is combined with the BPCHAR type and
a non-deterministic collation. Fortunately, it did not affect hash
indexes, because hash indexes do not use extended hash functions.
Decline to backpatch, per discussion.
Discussion: https://postgr.es/m/eb83d0ac7b299eb08f9b900dd08a5a0c5d90e517.camel@j-davis.com
Reviewed-by: Richard Guo, Tom Lane
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/7ac0f8d384a4633c6652ae1f6bba40d42d21ec18
Modified Files
--------------
src/backend/utils/adt/varchar.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Andres Freund | 2022-12-03 03:04:47 | pgsql: Prevent pgstats from getting confused when relkind of a relation |
| Previous Message | Jeff Davis | 2022-12-02 21:55:41 | Re: pgsql: Doc: document bpchar, clarify relationship of text and varchar. |