Re: using server side cursor

From: Federico Di Gregorio <fog(at)dndg(dot)it>
To: thomas veymont <thomas(dot)veymont(at)gmail(dot)com>
Cc: psycopg(at)postgresql(dot)org
Subject: Re: using server side cursor
Date: 2011-10-14 11:41:30
Message-ID: 4E981FEA.6010702@dndg.it
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On 14/10/11 12:32, thomas veymont wrote:
[snip]
> I guess I'm doing it the wrong way. There's a doc in psycopg
> about named cursors but I don't understand exactly how I should
> follow it to tie to my problem. (that is : using my existing pgpsql function
> that returns a cursor, then iterate on that cursor).
>
> any suggestion ?

Yes, use the native support for server-side cursors in psycopg. First,
don't use a procedure to setup the cursor but just pass to execute()
your SQL:

curs = conn.cursor("mycursor")
curs.execute("SELECT col FROM test")
curs.fetchmany(10) # fetch 10 rows from the cursor

hipe this helps,
federico

--
Federico Di Gregorio fog(at)initd(dot)org
When people say things are a lot more complicated than that, they
means they're getting worried that they won't like the truth.
-- Granny Weatherwax

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