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From: Arnau <arnaulist@andromeiberica.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: PostgreSQL Performance <pgsql-performance@postgresql.org>
Subject: Re: index over timestamp not being used
Date: Tue, 24 Jul 2007 21:31:07 +0200
Message-ID: <46A6537B.6010604@andromeiberica.com> (raw)
In-Reply-To: <14907.1185305095@sss.pgh.pa.us>
References: <46A64475.3040201@andromeiberica.com>
	<14907.1185305095@sss.pgh.pa.us>

Hi Tom,

> 
> Alternatively, do you really need to_timestamp at all?  The standard
> timestamp input routine won't have any problem with that format:
>     t.timestamp_in >= '20070101'

This is always I think I'm worried, what happens if one day the internal 
format in which the DB stores the date/timestamps changes. I mean, if 
instead of being stored as YYYYMMDD is stored as DDMMYYYY, should we 
have to change all the queries? I thought the 
to_char/to_date/to_timestamp functions were intented for this purposes


-- 
Arnau



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