Re: Bulk updates/inserts - Mailing list pgsql-interfaces

From Christoph Haller
Subject Re: Bulk updates/inserts
Date
Msg-id 200404141251.OAA21416@rodos
Whole thread Raw
In response to Bulk updates/inserts  (Shelby Cain <alyandon@yahoo.com>)
Responses Re: Bulk updates/inserts
List pgsql-interfaces
> 
> Is it currently possible to perform bulk
> updates/inserts via host arrays using ecpg?  If so,
> would someone mind showing me an example of the proper
> syntax as I can't seem to come up with something that
> the ecpg preprocessor likes.
> 
> On a side note, if ecpg doesn't support bulk
> inserts/updates are there any plans for adding such
> support?  Is there anyway programmatically to get
> close to the same speed for inserts/updates as say the
> COPY command?
> 
> Regards,
> 
> Shelby Cain
> 
> __________________________________

Doing bulk inserts via host arrays is not possible AFAICT. 
I posted a similar request in February 2003. 
See 
http://archives.postgresql.org/pgsql-interfaces/2003-02/msg00091.php 

BTW, I don't see how a bulk update could be done. 

There is a way to use COPY programmatically via libpq: 

something like ...

PQexec("COPY xxx FROM stdin");
for (...)
{   sprintf(buf, "%d\t%d\t...\n",           values[0], values[1], ... values[n]);   PQputline(conn, buf);
}
PQputline(conn, "\\.\n");
PQendcopy(conn);

Regards, Christoph 



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