Is there any documentation on explain?

From: Diogo Biazus <diogo(at)ikono(dot)com(dot)br>
To: pgsql-general(at)postgresql(dot)org
Subject: Is there any documentation on explain?
Date: 2002-10-08 12:23:51
Message-ID: 3DA2CE57.7060308@ikono.com.br
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

Hi everybody,

I have some questions about the results in explain.
I don't know exactly what's the diference between "merge join" and "hash
join", wich one is faster?
What is the meaning of the cost number?
Is there any documentation about this?

Thanks in advance,

--
Diogo de Oliveira Biazus
diogo(at)ikono(dot)com(dot)br
Ikono Sistemas e Automação
http://www.ikono.com.br

Responses

Browse pgsql-general by date

  From Date Subject
Next Message Shridhar Daithankar 2002-10-08 12:58:01 Re: Hot Backup
Previous Message Erwan DUROSELLE 2002-10-08 12:17:47 Re: Hot Backup