Обсуждение: Named Cursor Basics

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Named Cursor Basics

От
maplabs@light42.com
Дата:
Hi All-

  thanks for the re-invigoration of psycopg2.. looking forward to
great things..

I have a big, big table, and I want to iterate through each record once. I am
not clear on using named cursor and pages though..

  I tried a simple example late last night, and it iterated twice
then stopped.
Today, after a bit more reading, I tried again in the interactive
shell, but got

   OperationalError: cursor "tmp" does not exist

There is something I am missing.. this is so fundemental.. 
executing a select * on the table with a non-named cursor does not appear
to be an option..

  I have psycopg2 2.4.1 built from source and installed on linux. Pg 9

  thanks 
   -Brian



Re: Named Cursor Basics

От
Federico Di Gregorio
Дата:
On 19/05/11 22:52, maplabs@light42.com wrote:
>   thanks for the re-invigoration of psycopg2.. looking forward to
> great things..
>
> I have a big, big table, and I want to iterate through each record once.
> I am
> not clear on using named cursor and pages though..
>
>   I tried a simple example late last night, and it iterated twice
> then stopped.
> Today, after a bit more reading, I tried again in the interactive
> shell, but got
>
>    OperationalError: cursor "tmp" does not exist

Can you show us the code?

federico

--
Federico Di Gregorio                         federico.digregorio@dndg.it
Studio Associato Di Nunzio e Di Gregorio                  http://dndg.it
 I porcellini di terra sono davvero Crostacei! Non lo sapevo!
  Certo che sono crostacei, hanno la crosta!
  Allora la pizza è un crostaceo?!               -- discorso all'ESC2k07