From: | Alexander Lakhin <exclusion(at)gmail(dot)com> |
---|---|
To: | Dmitry Koval <d(dot)koval(at)postgrespro(dot)ru>, Richard Guo <guofenglinux(at)gmail(dot)com> |
Cc: | Alexander Korotkov <aekorotkov(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Add SPLIT PARTITION/MERGE PARTITIONS commands |
Date: | 2024-04-11 12:00:00 |
Message-ID: | fdaa003e-919c-cbc9-4f0c-e4546e96bd65@gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Hi Dmitry,
11.04.2024 11:59, Dmitry Koval wrote:
>
>> FWIW, I also proposed a patch earlier that fixes error messages and
>> comments in the split partition code
>
> Sorry, I thought all the fixes you suggested were already included in v1-0002-Fixes-for-english-text.patch (but they
> are not).
> Added missing lines to v2-0002-Fixes-for-english-text.patch.
>
It seems to me that v2-0001-Fix-for-SPLIT-MERGE-partitions-of-temporary-table.patch
is not complete either.
Take a look, please:
CREATE TABLE t (i int) PARTITION BY RANGE (i);
SET search_path = pg_temp, public;
CREATE TABLE tp_0_1 PARTITION OF t
FOR VALUES FROM (0) TO (1);
-- fails with:
ERROR: cannot create a temporary relation as partition of permanent relation "t"
But:
CREATE TABLE t (i int) PARTITION BY RANGE (i);
CREATE TABLE tp_0_1 PARTITION OF t
FOR VALUES FROM (0) TO (1);
CREATE TABLE tp_1_2 PARTITION OF t
FOR VALUES FROM (1) TO (2);
INSERT INTO t VALUES(0), (1);
SELECT * FROM t;
-- the expected result is:
i
---
0
1
(2 rows)
SET search_path = pg_temp, public;
ALTER TABLE t
MERGE PARTITIONS (tp_0_1, tp_1_2) INTO tp_0_2;
-- succeeds, and
\c -
SELECT * FROM t;
-- gives:
i
---
(0 rows)
Please also ask your tech writers to check contents of src/test/sql/*, if
possible (perhaps, they'll fix "salesmans" and improve grammar).
Best regards,
Alexander
From | Date | Subject | |
---|---|---|---|
Next Message | Ranier Vilela | 2024-04-11 12:03:55 | Re: Fix possible dereference null pointer (src/backend/replication/logical/reorderbuffer.c) |
Previous Message | Kirill Reshke | 2024-04-11 11:55:59 | Re: Allow non-superuser to cancel superuser tasks. |