Thread: schema Cleanning

schema Cleanning

From
salah jubeh
Date:
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 


Re: schema Cleanning

From
salah jubeh
Date:
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@yahoo.com>
To: pgsql-general@postgresql.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 



Re: schema Cleanning

From
Guillaume Lelarge
Date:
Le 23/02/2011 09:10, salah jubeh a écrit :
> [...]
> 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
>

No, there's no stats on views.


--
Guillaume
 http://www.postgresql.fr
 http://dalibo.com

Re: schema Cleanning

From
salah jubeh
Date:
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@hotmail.com>
To: s_jubeh@yahoo.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@yahoo.com
Subject: Re: [GENERAL] schema Cleanning
To: s_jubeh@yahoo.com; pgsql-general@postgresql.org

.ExternalClass DIV {}
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@yahoo.com>
To: pgsql-general@postgresql.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