Re: schema Cleanning

From: salah jubeh <s_jubeh(at)yahoo(dot)com>
To: Michael Black <michaelblack75052(at)hotmail(dot)com>
Cc: pgsql <pgsql-general(at)postgresql(dot)org>
Subject: Re: schema Cleanning
Date: 2011-02-24 09:35:08
Message-ID: 707193.41027.qm@web52702.mail.re2.yahoo.com
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Hello,

Exactly, I want to drop unused tables, views, etc..., I am writing now a shell
script to handle this issue by analyzing the log files. If you have suggestions
and comments I will be glade to hear it.

Regards

________________________________
From: Michael Black <michaelblack75052(at)hotmail(dot)com>
To: s_jubeh(at)yahoo(dot)com
Sent: Wed, February 23, 2011 11:57:01 PM
Subject: RE: [GENERAL] schema Cleanning

I do not know what your criteria is for dropping things. But I would be very
sure that something is no longer used. For example, some tables are not used
but once a quarter or once a year. And the same is true with views and
procedures. But that would also depend on the type of data like accounting or
inventory verses customer. Just some thoughts.

Michael

________________________________
Date: Wed, 23 Feb 2011 00:10:03 -0800
From: s_jubeh(at)yahoo(dot)com
Subject: Re: [GENERAL] schema Cleanning
To: s_jubeh(at)yahoo(dot)com; pgsql-general(at)postgresql(dot)org

Hello Guys,

This is a simple way to check if there is no activity on the table,

SELECT relname,seq_tup_read,idx_tup_fetch FROM pg_stat_user_tables
WHERE (idx_tup_fetch + seq_tup_read)= 0;

Is there is any way to make similar checks on views

Regards

________________________________
From: salah jubeh <s_jubeh(at)yahoo(dot)com>
To: pgsql-general(at)postgresql(dot)org
Sent: Mon, February 21, 2011 4:53:41 PM
Subject: [GENERAL] schema Cleanning

Hello,

I am trying to drop deprecated tables, views, procedures from an existing
database, I am checking the pg_stat_user_tables view to check if the tables are
accessed recently also to check live tuples. For deprecated views and
procedures, I am wondering How can I do that, for example suppose the table is
used and there is a view defined using this table but no one is using it. Is
there is away to check the views statistics.

Regards

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