Why doesn't COPY support the HEADER options for tab-separated output?
Mostly just curious, as this is preventing me from using tab-separated
output. I'd like there to be a header in my files. I have to use CSVs
instead.
Joe
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.
[ "this" means the fact that COPY doesn't support the HEADER option. ]
We assume CSV is going to be read into a tool that can use the header
names; delimited files don't usually have a use for those headers.
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On Mon, Aug 12, 2013 at 4:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.[ "this" means the fact that COPY doesn't support the HEADER option. ]
We assume CSV is going to be read into a tool that can use the header
names; delimited files don't usually have a use for those headers.
that's a terrible assumption.
merlin
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On Mon, Aug 12, 2013 at 2:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.[ "this" means the fact that COPY doesn't support the HEADER option. ]
We assume CSV is going to be read into a tool that can use the header
names; delimited files don't usually have a use for those headers.
There have been a few cases where I wanted this, too. I can see why
implementing it is less important than having it for CSV, but is there
a reason to consider this harmful for TEXT format? I.e. if someone
submitted a patch, would it be rejected?
Cheers,
Jeff
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On Mon, Aug 12, 2013 at 03:17:00PM -0700, Jeff Janes wrote:
On Mon, Aug 12, 2013 at 2:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.[ "this" means the fact that COPY doesn't support the HEADER option. ]
We assume CSV is going to be read into a tool that can use the header
names; delimited files don't usually have a use for those headers.There have been a few cases where I wanted this, too. I can see why
implementing it is less important than having it for CSV, but is there
a reason to consider this harmful for TEXT format? I.e. if someone
submitted a patch, would it be rejected?
I see no reason _not_ to support it, so sure, either we add this to 9.4,
or add it to the TODO list.
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EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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On 08/12/2013 02:15 PM, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated
output. I'd like there to be a header in my files. I have to use CSVs
instead.
I am not sure I understand. Do you mean you are converting the file to
comma separated or that you are using CSV and having to specify the
delimiter as '\t'?
Joe
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On 12/08/13 23:18, Bruce Momjian wrote:
On Mon, Aug 12, 2013 at 03:17:00PM -0700, Jeff Janes wrote:
On Mon, Aug 12, 2013 at 2:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.
Late to the discussion, but it does work to set format=csv and delimiter
= E'\t' to get tab-separated. Be nice not to have to though.
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On Thu, Aug 15, 2013 at 09:25:07AM +0100, Richard Huxton wrote:
On 12/08/13 23:18, Bruce Momjian wrote:
On Mon, Aug 12, 2013 at 03:17:00PM -0700, Jeff Janes wrote:
On Mon, Aug 12, 2013 at 2:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated output.
I'd like there to be a header in my files. I have to use CSVs instead.Late to the discussion, but it does work to set format=csv and
delimiter = E'\t' to get tab-separated. Be nice not to have to
though.
I assume that is going to add quotes to a field that contains quotes:
CREATE TABLE test(x TEXT);
INSERT INTO test VALUES ('"a"');
COPY test TO STDOUT WITH (FORMAT CSV, DELIMITER E'\t');
"""a"""
I have added this to the TODO list:
Allow COPY "text" format to output a header
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On Thu, Aug 15, 2013 at 1:25 AM, Richard Huxton <dev@archonet.com> wrote:
On 12/08/13 23:18, Bruce Momjian wrote:
On Mon, Aug 12, 2013 at 03:17:00PM -0700, Jeff Janes wrote:
On Mon, Aug 12, 2013 at 2:21 PM, Bruce Momjian <bruce@momjian.us> wrote:
On Mon, Aug 12, 2013 at 02:15:25PM -0700, Joe Van Dyk wrote:
Mostly just curious, as this is preventing me from using tab-separated
output.
I'd like there to be a header in my files. I have to use CSVs instead.Late to the discussion, but it does work to set format=csv and delimiter =
E'\t' to get tab-separated. Be nice not to have to though.
Also, the escaping/quoting mechanisms are different. I often find the
escapes of the TEXT format more convenient than the CSV with E'\t'.
Cheers,
Jeff
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