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Re: Bulk Load and Extract from PostgreSQL

From: Sandeep Khandelwal <sandeep_khandelwal27(at)yahoo(dot)com>
To: sdavis2(at)mail(dot)nih(dot)gov
Cc: pgsql-interfaces(at)postgresql(dot)org
Subject: Re: Bulk Load and Extract from PostgreSQL
Date: 2006-10-17 12:28:45
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-interfaces
Hi Sean.

I will try you option. Thanks a lot for the information.


----- Original Message ----
From: Sean Davis <sdavis2(at)mail(dot)nih(dot)gov>
To: Sandeep Khandelwal <sandeep_khandelwal27(at)yahoo(dot)com>
Cc: pgsql-interfaces(at)postgresql(dot)org
Sent: Tuesday, October 17, 2006 5:53:14 PM
Subject: Re: [INTERFACES] Bulk Load and Extract from PostgreSQL

On Tuesday 17 October 2006 08:18, Sandeep Khandelwal wrote:
> Hi Sean.
> The reference that you mentioned is just for Inclusion in the SQL commands
> directly. But.........
> I am trying to load coma seperated data using COPY FROM STDIN command (TEXT
> mode) and using PQputCopydata API. COPY FROM STDIN command requires user to
> specify coma seperated text version of all the data.
> My question is: If I have binary data(bytea) then I have to convert this
> data into string (char *) form and pass this data to PostgreSQL using
> PQputCopydata API. And, I don't have any API in Libpq to convert binary
> data into string.


I see the issue--sorry about the misunderstanding.  I'm not sure what the 
"correct" answer is, but you could simply do base64 client-side encoding and 
decoding of your data.  


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