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* unused columns in copy
@ 2009-07-20 13:22 chester c young <chestercyoung@yahoo.com>
0 siblings, 1 reply; 3+ messages in thread
From: chester c young @ 2009-07-20 13:22 UTC (permalink / raw)
To: pgsql-sql
is there a way for COPY FROM to ignore unused columns in CSV?
in other words, if table t1 has columns c1, c2, and if csv has columns c1, c3, c2, could I do something like
COPY t1( c1, null, c2 ) FROM 'file.csv'
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: unused columns in copy
@ 2009-07-20 22:59 Marcin Stępnicki <mstepnicki@gmail.com>
parent: chester c young <chestercyoung@yahoo.com>
0 siblings, 1 reply; 3+ messages in thread
From: Marcin Stępnicki @ 2009-07-20 22:59 UTC (permalink / raw)
To: chester c young <chestercyoung@yahoo.com>; +Cc: pgsql-sql
On Mon, Jul 20, 2009 at 3:22 PM, chester c young<chestercyoung@yahoo.com> wrote:
>
> is there a way for COPY FROM to ignore unused columns in CSV?
>
> in other words, if table t1 has columns c1, c2, and if csv has columns c1, c3, c2, could I do something like
>
> COPY t1( c1, null, c2 ) FROM 'file.csv'
No, but you can use pgloader which can easily deal with your problem
and much more. http://pgfoundry.org/projects/pgloader/
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: unused columns in copy
@ 2009-07-21 00:20 nha <lyondif02@free.fr>
parent: Marcin Stępnicki <mstepnicki@gmail.com>
0 siblings, 0 replies; 3+ messages in thread
From: nha @ 2009-07-21 00:20 UTC (permalink / raw)
To: Chester C Young <chestercyoung@yahoo.com>; +Cc: Marcin Stępnicki <mstepnicki@gmail.com>; pgsql-sql
Hello,
Le 21/07/09 0:59, Marcin Stępnicki a écrit :
> On Mon, Jul 20, 2009 at 3:22 PM, chester c young<chestercyoung@yahoo.com> wrote:
>> is there a way for COPY FROM to ignore unused columns in CSV?
>>
>> in other words, if table t1 has columns c1, c2, and if csv has columns c1, c3, c2, could I do something like
>>
>> COPY t1( c1, null, c2 ) FROM 'file.csv'
>
> No, but you can use pgloader which can easily deal with your problem
> and much more. http://pgfoundry.org/projects/pgloader/
>
Depending on PostgreSQL version, copy restrictions may be performed (see
also documentation of PostgreSQL 8.4):
http://www.postgresql.org/docs/8.4/interactive/sql-copy.html
Assuming that a CSV file contains data with column headers c1, c2, and
c3, the following statement would retrieve only columns c1 and c2 from
this file to a table t1:
COPY t1(c1, c2) FROM '/path/to/file.csv';
Regards.
--
nha / Lyon / France.
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2009-07-20 13:22 unused columns in copy chester c young <chestercyoung@yahoo.com>
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2009-07-21 00:20 ` nha <lyondif02@free.fr>
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