On Sun, Oct 1, 2023 at 05:30:39AM -0400, Ann Harrison wrote:
> Other databases do allow that sort of gradual migration. One example
> has an internal table of record descriptions indexed the table identifier
> and a description number. Each record includes a header with various
> useful bits i
On Friday, October 6, 2023, Tom Lane wrote:
> "David G. Johnston" writes:
> >> On 10/6/23 08:45, Ron wrote:
> >>> Nah. "The programmer -- and DBA -- on the Clapham omnibus" quite
> >>> reasonably expects that COPY table_name TO (output)" copies all the
> >>> columns listed in "\d table_name".
>
"David G. Johnston" writes:
>> On 10/6/23 08:45, Ron wrote:
>>> Nah. "The programmer -- and DBA -- on the Clapham omnibus" quite
>>> reasonably expects that COPY table_name TO (output)" copies all the
>>> columns listed in "\d table_name".
> Sure, but it doesn't. Mainly since copy's original de
On 10/6/23 11:08, David G. Johnston wrote:
On Fri, Oct 6, 2023 at 8:54 AM Adrian Klaver
wrote:
On 10/6/23 08:45, Ron wrote:
> On 10/6/23 09:04, Andreas Kretschmer wrote:
>>
>>> Not sure how convincing that reasoning is, but it was at least
>>> thought about. I do agree wi
On Fri, Oct 6, 2023 at 8:54 AM Adrian Klaver
wrote:
> On 10/6/23 08:45, Ron wrote:
> > On 10/6/23 09:04, Andreas Kretschmer wrote:
> >>
>
> >>> Not sure how convincing that reasoning is, but it was at least
> >>> thought about. I do agree with it as far as the default column
> >>> list goes, but
On 10/6/23 08:45, Ron wrote:
On 10/6/23 09:04, Andreas Kretschmer wrote:
Not sure how convincing that reasoning is, but it was at least
thought about. I do agree with it as far as the default column
list goes, but maybe we could allow explicit selection of these
columns in COPY TO.
sounds
On 10/6/23 09:04, Andreas Kretschmer wrote:
Am 06.10.23 um 15:47 schrieb Tom Lane:
Luca Ferrari writes:
I'm wondering why in COPY TO (file or program) I cannot use generated
columns: since I'm pushing data out of the table, why they are not
allowed?
There's a comment about that in copy.c:
On Fri, Oct 6, 2023 at 4:59 PM Rob Sargent wrote:
> What would be copied? The formula?
Of course not. That's DDL, not DML IMHO.
> Seems to me one is using “the fast option” so adding the column which can
> be regenerated is overhead.
>
Regenerated by whom? COPY TO to is output to the outsi
On Friday, October 6, 2023, Rob Sargent wrote:
>
>
> > On Oct 6, 2023, at 7:47 AM, Tom Lane wrote:
> >
> > Luca Ferrari writes:
> >> I'm wondering why in COPY TO (file or program) I cannot use generated
> >> columns: since I'm pushing data out of the table, why they are not
> >> allowed?
> >
>
> On Oct 6, 2023, at 7:47 AM, Tom Lane wrote:
>
> Luca Ferrari writes:
>> I'm wondering why in COPY TO (file or program) I cannot use generated
>> columns: since I'm pushing data out of the table, why they are not
>> allowed?
>
> There's a comment about that in copy.c:
>
> * We don't includ
Hello,
On Thu, 5 Oct 2023 at 16:42, jacktby jacktby wrote:
>
> Hi, I’m writing some kernel codes in pg15, and now I need to make a map
> struct, I know c-lang doesn’t support this, so does pg support an internal
> struct? Hopefully your replies.
PostgreSQL has hash tables:
https://github.com/p
Am 06.10.23 um 15:47 schrieb Tom Lane:
Luca Ferrari writes:
I'm wondering why in COPY TO (file or program) I cannot use generated
columns: since I'm pushing data out of the table, why they are not
allowed?
There's a comment about that in copy.c:
* We don't include generated columns in th
Luca Ferrari writes:
> I'm wondering why in COPY TO (file or program) I cannot use generated
> columns: since I'm pushing data out of the table, why they are not
> allowed?
There's a comment about that in copy.c:
* We don't include generated columns in the generated full list and we don't
* al
On 10/6/23 07:20, Andreas Kretschmer wrote:
Am 06.10.23 um 13:53 schrieb Luca Ferrari:
Hi all,
I'm wondering why in COPY TO (file or program) I cannot use generated
columns: since I'm pushing data out of the table, why they are not
allowed?
Example:
testdb=# CREATE TABLE test( pk int generat
Am 06.10.23 um 13:53 schrieb Luca Ferrari:
Hi all,
I'm wondering why in COPY TO (file or program) I cannot use generated
columns: since I'm pushing data out of the table, why they are not
allowed?
Example:
testdb=# CREATE TABLE test( pk int generated always as identity primary key
, ts times
Hi all,
I'm wondering why in COPY TO (file or program) I cannot use generated
columns: since I'm pushing data out of the table, why they are not
allowed?
Example:
testdb=# CREATE TABLE test( pk int generated always as identity primary key
, ts timestamp default current_timestamp
, month int gener
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