[SQL] lo_import

2012-01-03 Thread Maurício Cruz

Hi all,

I'm trying to use lo_import to import a file into my database, if I 
execute from postgres runing in my local machine
it works perfectly, but if I do it in the postgres runing in the server, 
it says "No such file or directory"


I Guess postgres only see file on the machine it is runing and not 
through the network...
I will have to upload the file into the server and then use import  ?   
is there any other way ?


Thanks every one.
Cruz


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Re: [SQL] lo_import

2012-01-03 Thread Tim Landscheidt
Maurício Cruz  wrote:

> I'm trying to use lo_import to import a file into my
> database, if I execute from postgres runing in my local
> machine
> it works perfectly, but if I do it in the postgres runing in
> the server, it says "No such file or directory"

> I Guess postgres only see file on the machine it is runing
> and not through the network...
> I will have to upload the file into the server and then use
> import  ?   is there any other way ?

Create a large object and then write to it?  What driver are
you using?

Tim


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Re: [SQL] lo_import

2012-01-03 Thread Jasen Betts
On 2012-01-03, Maurício Cruz  wrote:
> Hi all,
>
> I'm trying to use lo_import to import a file into my database, if I 
> execute from postgres runing in my local machine
> it works perfectly, but if I do it in the postgres runing in the server, 
> it says "No such file or directory"
>
> I Guess postgres only see file on the machine it is runing and not 
> through the network...

It can only see the files the database server can see.

> I will have to upload the file into the server and then use import  ?   

that would work

> is there any other way ?

the "\lo_import" command in psql, which reads files as the current
user anp pushes them through the database connection.
 
the best way is probably to add the file import feature to your
appplication.

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[SQL] ignore unique violation OR check row exists

2012-01-03 Thread rverghese
I want to insert a bunch of records and not do anything if the record already
exists. So the 2 options I considered are 1) check if row exists or insert
and 2) ignore the unique violation on insert if row exists. 
Any opinions on whether it is faster to INSERT and then catch the UNIQUE
VIOLATION exception and ignore it in plpgsql  versus check if row exists and
INSERT if it doesn't. 
I can't seem to ignore the UNIQUE VIOLATION exception via php, since it is a
plpgsql command, so if I have to do the check and insert, alternatively i
have a function that tries to insert and then ignores the violation. I was
wondering if one way was better than the other.
Thanks

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Re: [SQL] ignore unique violation OR check row exists

2012-01-03 Thread Misa Simic
If exists is better, though insert line by line and check if exists may
be very slow...

The best would be if you can use copy command from csv to staging table
(without constraints) and then

Insert to live from stage where stage constraint column not exist in
live...

Kind Regards,

Misa

Sent from my Windows Phone
From: rverghese
Sent: 03/01/2012 21:55
To: pgsql-sql@postgresql.org
Subject: [SQL] ignore unique violation OR check row exists
I want to insert a bunch of records and not do anything if the record already
exists. So the 2 options I considered are 1) check if row exists or insert
and 2) ignore the unique violation on insert if row exists.
Any opinions on whether it is faster to INSERT and then catch the UNIQUE
VIOLATION exception and ignore it in plpgsql  versus check if row exists and
INSERT if it doesn't.
I can't seem to ignore the UNIQUE VIOLATION exception via php, since it is a
plpgsql command, so if I have to do the check and insert, alternatively i
have a function that tries to insert and then ignores the violation. I was
wondering if one way was better than the other.
Thanks

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Sent from the PostgreSQL - sql mailing list archive at Nabble.com.

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