Re: TO_DATE function between PostgreSQL 8.2 and 9.4
От
David G. Johnston
Тема
Re: TO_DATE function between PostgreSQL 8.2 and 9.4
Дата
Msg-id
CAKFQuwZCDEBBOkW3H16UneUxffh3yK1CMCtGw7i=dT4ETiPSJA@mail.gmail.com
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Дерево обсуждения
TO_DATE function between PostgreSQL 8.2 and 9.4 gzh <gzhcoder@126.com>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 Tom Lane <tgl@sss.pgh.pa.us>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 Adrian Klaver <adrian.klaver@aklaver.com>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 "David G. Johnston" <david.g.johnston@gmail.com>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 John W Higgins <wishdev@gmail.com>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 Adrian Klaver <adrian.klaver@aklaver.com>
Re: TO_DATE function between PostgreSQL 8.2 and 9.4 Thomas Kellerer <shammat@gmx.net>
On Tue, May 17, 2022 at 8:55 AM gzh <gzhcoder@126.com> wrote:
--PostgreSQL 9.4
---------------
SELECT to_date(now() + '-7day', 'YYYY-MM-DD');
--------------------------------------------------------------------------------
ERROR: function to_date(timestamp with time zone, unknown) does not exist
LINE 1: SELECT to_date(now() + '-7day', 'YYYY-MM-DD')
^
********** Error **********
Is there any easy way to maintain compatibility?
You could try creating a user function named "to_date" with (timestamptz, text) as the signature and then inside the function cast the first argument to text explicitly before invoking the built-in to_date(text, text) function and returning its result.
You may have to deal with namespace/search_path issues though...
David J.
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