Re: [GENERAL] to_timestamp() and quarters

Scott Bailey wrote:
> Tom Lane wrote:
> > Asher Hoskins <asher(at)piceur(dot)co(dot)uk> writes:
> >> I can't seem to get to_timestamp() or to_date() to work with quarters,
> >
> > The source code says
> >
> > * We ignore Q when converting to date because it is not
> > * normative.
> > *
> > * We still parse the source string for an integer, but it
> > * isn't stored anywhere in 'out'.
> >
> > That might be a reasonable position, but it seems like it'd be better to
> > throw an error than silently do nothing. Anybody know what Oracle does
> > with this?
>
> +1 for throwing error.
> Oracle 10g throws ORA-01820: format code cannot appear in date input format.

Well, I can easily make it do what you expect, and I don't see many
error returns in that area of the code, so I just wrote a patch that
does what you would expect rather than throw an error.

test=> select to_date('2010-1', 'YYYY-Q');
to_date
------------
2010-01-01
(1 row)

test=> select to_date('2010-3', 'YYYY-Q');
to_date
------------
2010-07-01
(1 row)

test=> select to_date('2010-7', 'YYYY-Q');
to_date
------------
2011-07-04
(1 row)

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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