Josh Berkus writes:
>>
>> 4) MAP_HEADER ('column 1'-> 'col_1', 'Date' -> 'input_date' ...)
>>
>> to cover the case when column names do not match.
> Personally, I think that's going way beyond what we want to do with
> COPY.
I agree --- if you know that much about the incoming data, you might
Excerpts from Andrew Dunstan's message of mié jun 20 12:56:52 -0400 2012:
>
> On 06/20/2012 12:50 PM, Alvaro Herrera wrote:
> > Another related case: you have a file with headers and columns (n, t,
> > x, y, z) but your table only has n and t. How would you tell COPY to
> > discard the junk col
>
> 4) MAP_HEADER ('column 1'-> 'col_1', 'Date' -> 'input_date' ...)
>
> to cover the case when column names do not match.
Personally, I think that's going way beyond what we want to do with
COPY. At that point, check out the CSV-array FDW.
Of course, if someone writes a WIP patch which imple
> -Ursprüngliche Nachricht-
> Von: pgsql-hackers-ow...@postgresql.org im Auftrag von Josh Berkus
> Gesendet: Mi 6/20/2012 7:06
> An: pgsql-hackers@postgresql.org
> Betreff: Re: [HACKERS] Nasty, propagating POLA violation in COPY CSV HEADER
...
> (1) is valuabl
> In the past people have asked me to have copy use the CSV header line in
> place of supplying a column list in the COPY command. I can certainly
> see some utility in that, and I think it might achieve what David wants.
> Using that scenario it would be an error to supply an explicit column
> li
On 06/20/2012 12:50 PM, Alvaro Herrera wrote:
Another related case: you have a file with headers and columns (n, t,
x, y, z) but your table only has n and t. How would you tell COPY to
discard the junk columns? Currently it just complains that they are
there.
That's one of the main use ca
On 06/20/2012 12:18 PM, Tom Lane wrote:
David Fetter writes:
OK, new proposal:
COPY FROM (Thanks, Andrew! Must not post while asleep...) should have
an option which requires that HEADER be enabled and mandates that the
column names in the header match the columns coming in.
Has someone got a
Excerpts from David Fetter's message of mié jun 20 12:43:31 -0400 2012:
> On Wed, Jun 20, 2012 at 12:18:45PM -0400, Tom Lane wrote:
> > In your original proposal, I was rather wondering what should happen
> > if the incoming file didn't have the same set of columns called out
> > in the COPY comm
On Wed, Jun 20, 2012 at 12:18:45PM -0400, Tom Lane wrote:
> David Fetter writes:
> > OK, new proposal:
>
> > COPY FROM (Thanks, Andrew! Must not post while asleep...) should have
> > an option which requires that HEADER be enabled and mandates that the
> > column names in the header match the co
David Fetter writes:
> OK, new proposal:
> COPY FROM (Thanks, Andrew! Must not post while asleep...) should have
> an option which requires that HEADER be enabled and mandates that the
> column names in the header match the columns coming in.
> Has someone got a better name for this option than
On Wed, Jun 20, 2012 at 11:47:14AM -0400, Tom Lane wrote:
> David Fetter writes:
> > Rather than being totally ignored in the COPY OUT (CSV HEADER)
> > case, the header line in should be parsed to establish which
> > columns are where and rearranging the output if needed.
>
> This is not "fix a P
On 06/20/2012 11:02 AM, David Fetter wrote:
Folks,
A co-worker filed a bug against file_fdw where the columns in a
FOREIGN TABLE were scrambled on SELECT. It turned out that this comes
from the (yes, it's documented, but since it's documented in a place
not obviously linked to the bug, it's p
David Fetter writes:
> Rather than being totally ignored in the COPY OUT (CSV HEADER) case,
> the header line in should be parsed to establish which columns are
> where and rearranging the output if needed.
This is not "fix a POLA violation". This is a non-backwards-compatible
new feature, which
Folks,
A co-worker filed a bug against file_fdw where the columns in a
FOREIGN TABLE were scrambled on SELECT. It turned out that this comes
from the (yes, it's documented, but since it's documented in a place
not obviously linked to the bug, it's pretty useless) "feature" of
COPY CSV HEADER wher
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