From: Tom Lane <tgl@sss.pgh.pa.us>
To: the6campbells <the6campbells@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: date + interval year - why is the return type convered to a timestamp?
Date: Thu, 22 Oct 2009 19:15:57 -0400
Message-ID: <16906.1256253357@sss.pgh.pa.us> (raw)
In-Reply-To: <22431f1b0910221404i52040b19s7c89f6dda4ae187d@mail.gmail.com>
References: <22431f1b0910221404i52040b19s7c89f6dda4ae187d@mail.gmail.com>
the6campbells <the6campbells@gmail.com> writes:
> Why is Postgres returning a timestamp instead of the expected date data type
> for the first expression (the second returns a date)?
> select date '2001-03-30' - interval '1' year, date '2001-03-30' - integer
> '365' from tversion
Would you expect a date for
date '2001-03-30' - interval '1 hour'
? They are type-wise the same case; we don't have different types for
different lengths of interval.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, the6campbells@gmail.com
Subject: Re: date + interval year - why is the return type convered to a timestamp?
In-Reply-To: <16906.1256253357@sss.pgh.pa.us>
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