Re: Data loading from a flat file...

Issue the following command before you execute copy

ALTER TABLE DISTANCE ALTER COLUMN <column name which should use seq>
SET DEFAULT nextval('<sequence to be used>')

Btw, what version of postgres are you using?

On 1/6/06, Angshu Kar <angshu96@gmail.com> wrote:
> here it is:
>
>
>                Table "public.distance"
>         Column        |       Type       | Modifiers
> ----------------------+------------------+-----------
>  distance_id          | integer          | not null
>  query_id              | integer          | not null
>  subject_id            | integer          | not null
>  distanceparameter_id | integer          |
>  pvalue               | double precision | not null
> Indexes:
>     "distance_pkey" primary key, btree (distance_id)
>     "distance_query_id_key" unique, btree (query_id, subject_id,
> distanceparameter_id)
> Foreign-key constraints:
>     "distance_distanceparameter_id_fkey" FOREIGN KEY
> (distanceparameter_id) REFERENCES
> distanceparameter(distanceparameter_id) ON UPDATE RESTRICT
> ON DELETE RESTRICT
>     "distance_query_id_fkey" FOREIGN KEY (query_id) REFERENCES
> entry(entry_id) ON UPDATE RESTRICT ON DELETE RESTRICT
>     "distance_subject_id_fkey" FOREIGN KEY (subject_id) REFERENCES
> entry(entry_id) ON UPDATE RESTRICT ON DELETE RESTRICT
>
>
>
> On 1/6/06, Pandurangan R S <pandurangan.r.s@gmail.com> wrote:
> > Please show the output of describe command of the table
> >
> > On 1/6/06, Angshu Kar <angshu96@gmail.com> wrote:
> > > More problems solved and created - Now I'm getting the error:
> > >
> > >  null value in column "subject_id" violates not-null constraint
> > >
> > > and this is nothing but column A which I talked about in the very
> beginning!
> > > Since its not null how can I COPY to B C and E. The same problem will
> arise
> > > with field E too!
> > >
> > > AK
> > >
> > >
> > >
> > > On 1/6/06, Angshu Kar < angshu96@gmail.com> wrote:
> > > > Thanks for the chmod command Pandu but the cat command is not doing
> > > anything!
> > > >
> > > > And as Michael suggested that file has indeed carriage returns
> embedded in
> > > fields. I opened it in my windows m/c using textpad and got:
> > > >
> > > > B1
> > > >     C1
> > > >     E1
> > > > B2
> > > >     C2
> > > >     E2
> > > > .
> > > > .
> > > > .
> > > >
> > > >
> > > >
> > > > Any more suggestions on how to solve this? :(
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On 1/6/06, Pandurangan R S <pandurangan.r.s@gmail.com > wrote:
> > > > > To get rid of ^M characters you could use
> > > > >
> > > > > cat file | tr -d ^M
> > > > >
> > > > > you need to type ^V before you type ^M in the preceeding command.
> But
> > > > > ^V will not be displayed on the screen.
> > > > >
> > > > > You might need to change directory permission too.
> > > > >
> > > > > use chmod +rx <username>.
> > > > >
> > > > > For this command to succeed you need to execute this command as root
> > > > > or the owner of the directory
> > > > >
> > > > > On 1/6/06, Angshu Kar < angshu96@gmail.com > wrote:
> > > > > > Thanks Michael.
> > > > > >
> > > > > > I'm using PgAdmin III 1.4.0 from my WinXP m/c to access the DB in
> my
> > > linux
> > > > > > m/c! The file has about 2GB data.It returns back to the prompt
> very
> > > soon.
> > > > > > I'm using less or vi command to view the file and getting those ^M
> as
> > > > > > mentioned (i.e. between fields). Any clue how I can massage the
> data?
> > > If you
> > > > > > suggest I can try and write the script.
> > > > > >
> > > > > > Also, now I'm facing another permission related problem!It's
> throwing
> > > the
> > > > > > error:
> > > > > > ERROR:  could not open file "/home/akar/final.out" for reading:
> > > Permission
> > > > > > denied
> > > > > >  I've changed the file owner to postgres but without any
> avail!Also do
> > > I
> > > > > > need to change the permission to akar directory? How(I'm a linux
> > > freshie)?
> > > > > >
> > > > > > Thanks,
> > > > > > Angshu
> > > > > >
> > > > > >
> > > > > >
> > > > > > On 1/5/06, Michael Fuhr < mike@fuhr.org> wrote:
> > > > > > > On Thu, Jan 05, 2006 at 11:04:16PM -0600, Angshu Kar wrote:
> > > > > > > > Thanks Jim. the statement is running without any error but
> nothing
> > > is
> > > > > > > > getting copied into the table!
> > > > > > >
> > > > > > > What client are you using and what's the exact command you ran?
> > > > > > > Does the command finish or does it never return?  How much data
> > > > > > > is there?  What version of PostgreSQL are you using and on what
> > > > > > > platform?
> > > > > > >
> > > > > > > > Also, my data file is showing some ^M chars like
> > > > > > > >
> > > > > > > > B1^M   C1^M   E1
> > > > > > > > B2^M   C2^M   E2
> > > > > > >
> > > > > > > The ^M sequence might represent a carriage return -- how are you
> > > > > > > viewing the file to see these characters?  Are they between
> fields
> > > > > > > as shown or only at the ends of lines?
> > > > > > >
> > > > > > > > Is it creating any trouble for the COPY command?
> > > > > > >
> > > > > > > Possibly; you might need to massage the data if you can't get
> COPY
> > > > > > > to read it.  That should be an easy job for a script (somebody
> here
> > > > > > > can probably help).
> > > > > > >
> > > > > > > > And can we use INSERT with COPY?
> > > > > > >
> > > > > > > To use INSERT you'd need to read the data and generate the
> > > appropriate
> > > > > > > INSERT commands; that's another scripting job.
> > > > > > >
> > > > > > > --
> > > > > > > Michael Fuhr
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Ignore the impossible but honor it ...
> > > > > > The only enviable second position is success, since failure always
> > > comes
> > > > > > first...
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > > Ignore the impossible but honor it ...
> > > > The only enviable second position is success, since failure always
> comes
> > > first...
> > >
> > >
> > >
> > > --
> > >
> > > Ignore the impossible but honor it ...
> > > The only enviable second position is success, since failure always comes
> > > first...
> >
>
>
>
> --
>
> Ignore the impossible but honor it ...
> The only enviable second position is success, since failure always comes
> first...