Re: Update taking forever - Mailing list pgsql-novice

From David G. Johnston
Subject Re: Update taking forever
Date
Msg-id CAKFQuwbmook0Dw1L5DuQZ8zvt3ahtuTtMY-s0iKEOnyfVzr9qg@mail.gmail.com
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In response to Re: Update taking forever  (Bianca Stephani <bianca.stephani@gmail.com>)
List pgsql-novice
If you would please refrain from top-posting and actually show us what you are doing, as opposed to describing it, more help may be forthcoming.

David J.

On Monday, June 15, 2015, Bianca Stephani <bianca.stephani@gmail.com> wrote:
On Mon, Jun 15, 2015 at 9:17 AM, David G. Johnston <david.g.johnston@gmail.com> wrote:
On Monday, June 15, 2015, Bianca Stephani <bianca.stephani@gmail.com> wrote:
Hi everyone.
I want to update the value of a column of 25 thousand rows and a sql update is taking forever (literally, more then one day). There's any other way so i can do that?

This would normally takes seconds (at most) if everything is working properly, so yes.  I would suspect your where clause is not using an index to find those rows and there are a lot more than 25k rows on the table in question.  Show us schemas and explain output if you want a more definitive answer.

Ops, i must have looked on the wrong place. There are 420k rows. 
My update have no "where" clause because i want to update all rows. I'm adding two columns to the table and i'm setting one of them with a select count and the other with the result of a recursive sql (defined before the update, not at each row).



Or you have locking issue...

David J. 



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Bianca Stephani.

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