Re: Data loading from a flat file...

Thanks a lot Pandu.Everything works ok. Now one last thing : I want to
insert a fixed value to the D field in all rows. Any statement for that?

On 1/6/06, Pandurangan R S <pandurangan(dot)r(dot)s(at)gmail(dot)com> wrote:
>
> 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(at)gmail(dot)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(dot)r(dot)s(at)gmail(dot)com> wrote:
> > > Please show the output of describe command of the table
> > >
> > > On 1/6/06, Angshu Kar <angshu96(at)gmail(dot)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(at)gmail(dot)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(dot)r(dot)s(at)gmail(dot)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(at)gmail(dot)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(at)fuhr(dot)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...
>

--
Ignore the impossible but honor it ...
The only enviable second position is success, since failure always comes
first...