Re: simple update queries take a long time - postgres 8.3.1 - Mailing list pgsql-general

From Raymond O'Donnell
Subject Re: simple update queries take a long time - postgres 8.3.1
Date
Msg-id 47F142AF.1050109@iol.ie
Whole thread Raw
In response to Re: simple update queries take a long time - postgres 8.3.1  (mark <markkicks@gmail.com>)
Responses Re: simple update queries take a long time - postgres 8.3.1  (mark <markkicks@gmail.com>)
Re: simple update queries take a long time - postgres 8.3.1  (mark <markkicks@gmail.com>)
List pgsql-general
On 31/03/2008 20:51, mark wrote:

> can you explain what the numbers mean in the EXPLAIN ANALYZE?
> (cost=0.00..8.46 rows=1 width=1073)  (actual time=0.094..0.161 rows=1
> loops=1)

It's worth reading through the docs at that reference in my previous
email - it's well explained there.

As I understand it, "cost" signifies the planner's estimate of how long
the query will take, in terms of disk page fetches. The "actual time" is
in milliseconds.

Ray.

---------------------------------------------------------------
Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland
rod@iol.ie
---------------------------------------------------------------

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