From: Adrian Klaver <adrian.klaver@gmail.com>
To: Tony Capobianco <tcapobianco@prospectiv.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: compare table names
Date: Mon, 9 Jan 2012 08:58:49 -0800
Message-ID: <201201090858.49838.adrian.klaver@gmail.com> (raw)
In-Reply-To: <1326126523.1983.16.camel@tony1.localdomain>
References: <1326125538.1983.12.camel@tony1.localdomain>
<201201090819.48041.adrian.klaver@gmail.com>
<1326126523.1983.16.camel@tony1.localdomain>
On Monday, January 09, 2012 8:28:43 am Tony Capobianco wrote:
> I see what you're saying:
>
> pg=# select tablename from pg_tables where tablename like 'tmp_staging%'
> and tablename < 'tmp_staging1230' and tablename > 'tmp_staging1228';
> tablename
> --------------------
> tmp_staging1229
>
>
> This query is part of a larger script where I want to dynamically select
> tablenames older than 10 days and drop them. The tables are created in
> a tmp_stagingMMDD format. I know postgres does not maintain object
> create times, how can I write this to select tables from pg_tables that
> are older than 10 days?
Well with out a year number(i.e. YYMMDD) that is going to be difficult around the
year break.
As an example:
test(5432)aklaver=>select * from name_test;
fld_1
-----------------
tmp_staging0109
tmp_staging0108
tmp_staging1229
(3 rows)
test(5432)aklaver=>SELECT fld_1 from name_test where fld_1 < 'tmp_staging'||
to_char(current_date-interval '10 days','MMDD') and fld_1 > 'tmp_staging0131';
fld_1
-----------------
tmp_staging1229
>
> Thanks.
> Tony
>
--
Adrian Klaver
adrian.klaver@gmail.com
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To: pgsql-sql@postgresql.org
Cc: adrian.klaver@gmail.com, tcapobianco@prospectiv.com
Subject: Re: compare table names
In-Reply-To: <201201090858.49838.adrian.klaver@gmail.com>
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