Re: about ecpg

From: Michael Meskes <meskes(at)postgresql(dot)org>
To: wlj <wulijie(at)neusoft(dot)com>
Cc: PostgresGeneral <pgsql-general(at)postgresql(dot)org>
Subject: Re: about ecpg
Date: 2002-08-30 12:47:22
Message-ID: 20020830124722.GA3904@feivel.fam-meskes.de
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On Thu, Aug 29, 2002 at 03:38:53PM +0800, wlj wrote:
> how to accomplish this function by ecpg
>
> exec sql declare test_curcor cursor for select * form test;//test(id,name)
> exec sql open test_curcor;
> ...
> exec sql update test set id=1 where current of test_curcor;
>
> the postgresql didn't support this function "... current of "

Is this a question concerning ecpg? Or do you want to know how to do
this in PostgreSQL? AFAIK we do not have a "current of" clause. Please
correct my if I'm wrong.

If we had we would need to declare a cursor "for update", but to the
best of my knowledge declare for update is not supported. Or in other
words, cursors are read-only.

Michael
--
Michael Meskes
Michael(at)Fam-Meskes(dot)De
Go SF 49ers! Go Rhein Fire!
Use Debian GNU/Linux! Use PostgreSQL!

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