From: vivek@staff.ownmail.com
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: change tuple before insert
Date: Wed, 2 Aug 2006 19:13:35 +0530
Message-ID: <200608021343.k72DhZ0L006767@mail009.ownmail.com> (raw)
Thanks Tom,
I am planning to use the function:-
HeapTuple SPI_copytuple(HeapTuple row) first and then modify the returned tuple using:-
HeapTuple SPI_modifytuple(Relation rel, HeapTuple row, ncols, colnum, Datum * values, const char * nulls)
But I am stuck here. How do I convert a string into Datum type required for parameter 4 of SPI_modifytuple. I think the datum type is some binary value and I want to insert a string in that coloumn.
With warm regards.
Vivek J. Joshi.
vivek@staff.ownmail.com
Trikon electronics Pvt. Ltd.
All science is either physics or stamp collecting.
-- Ernest Rutherford
Tom Lane wrote:
> ><vivek@staff.ownmail.com> writes:
>> How do i change the contents of a tuple for a row level trigger? do i have to
return tg_trigtuple or tg_newtuple? The doc is confusing. it says a tg_newtuple
can only be used in case of an update>
>
>You should not scribble on either of those. Make a fresh tuple and
>return that.
>
> regards, tom lane
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-interfaces@postgresql.org
Cc: vivek@staff.ownmail.com, tgl@sss.pgh.pa.us
Subject: Re: change tuple before insert
In-Reply-To: <200608021343.k72DhZ0L006767@mail009.ownmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox