On Tue, Oct 3, 2023 at 9:17 AM Laurenz Albe
wrote:
> On Tue, 2023-10-03 at 09:08 +0200, Dominique Devienne wrote:
> > In my case, it's OK not to be transactional, for these experiments. Is
> there a way
> > to lock the table and do the rewriting w/o generating any WAL? I don't
> have any experie
On Tue, 2023-10-03 at 09:08 +0200, Dominique Devienne wrote:
> In my case, it's OK not to be transactional, for these experiments. Is there
> a way
> to lock the table and do the rewriting w/o generating any WAL? I don't have
> any experience
> with unlogged tables, but should I take an exclusiv
On Tue, Oct 03, 2023 at 09:08:49AM +0200, Dominique Devienne wrote:
> In my case, it's OK not to be transactional, for these experiments. Is
> there a way
> to lock the table and do the rewriting w/o generating any WAL? I don't have
> any experience
> with unlogged tables, but should I take an exc
On Tue, Oct 3, 2023 at 6:45 AM Michael Paquier wrote:
> On Tue, Oct 03, 2023 at 06:31:27AM +0200, Laurenz Albe wrote:
> > On Tue, 2023-10-03 at 12:33 +1100, rob stone wrote:
> >> Would running CLUSTER on the table use the new parameters for the re-
> >> write?
> >
> > No, as far as I know.
>
> No
On Tue, Oct 03, 2023 at 06:31:27AM +0200, Laurenz Albe wrote:
> On Tue, 2023-10-03 at 12:33 +1100, rob stone wrote:
>> Would running CLUSTER on the table use the new parameters for the re-
>> write?
>
> No, as far as I know.
Note that under the hoods VACUUM FULL and CLUSTER use the same code
path
On Tue, 2023-10-03 at 12:33 +1100, rob stone wrote:
> Would running CLUSTER on the table use the new parameters for the re-
> write?
No, as far as I know.
You'd need something like
-- rewrite all tuples
UPDATE tab SET id = id;
-- get rid of the bloat
VACUUM (FULL) tab;
Yours,
Laurenz Al
Hello,
On Tue, 2023-10-03 at 08:57 +0900, Michael Paquier wrote:
> On Mon, Oct 02, 2023 at 04:42:15PM +0200, Dominique Devienne wrote:
> > According to the doc, the table is NOT changed.
> > In my case, I DO want to have the bytea column rewritten
> > according to the new STORAGE and/or COMPRESSIO
On Mon, Oct 02, 2023 at 04:42:15PM +0200, Dominique Devienne wrote:
> According to the doc, the table is NOT changed.
> In my case, I DO want to have the bytea column rewritten
> according to the new STORAGE and/or COMPRESSION.
> The doc doesn't mention how to achieve that.
Yes, the compression ty
Hi. If I do either or both of the changes below:
ddevienne=> alter table dd alter column val set compression lz4;
ALTER TABLE
ddevienne=> alter table dd alter column val set storage extended;
ALTER TABLE
According to the doc, the table is NOT changed.
In my case, I DO want to have the bytea colum
