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Re: Update with function

From: egbert <egbert(dot)bouwman(at)xs4all(dot)nl>
To: psycopg(at)postgresql(dot)org
Subject: Re: Update with function
Date: 2012-03-30 16:02:40
Message-ID: 1333123360.11432.7.camel@para.lan (view raw, whole thread or download thread mbox)
Lists: psycopg
On Fri, 2012-03-30 at 06:45 -0700, Adrian Klaver wrote:

> A simple solution that demonstrates one way to do the above:
> cur.execute("select recno from some_table")
> for row in cur:
> 	recno = cur[0]
> 	cur.execute("update books set inyear=%s", (makeyear(recno),))
Thanks for your suggestion, Adrian.
Actually, that was something I tried first.
But my some_table is about 165000 records, and it took nearly three
hours (on my not so young system) to run the individual updates.
So I looked for a one-pass solution.

Egbert Bouwman  
Keizersgracht 197-II    
1016 DS  Amsterdam      
Tel 0(031)20 6257991

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