Re: [HACKERS] Bug in to_timestamp(). - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: [HACKERS] Bug in to_timestamp().
Date
Msg-id CAEepm=1Y7z1VSisBKxa6x3E-jP-+=rWfw25q_PH2nGjqVcX-rw@mail.gmail.com
Whole thread Raw
In response to Re: [HACKERS] Bug in to_timestamp().  (Arthur Zakirov <a.zakirov@postgrespro.ru>)
Responses Re: [HACKERS] Bug in to_timestamp().
List pgsql-hackers
On Thu, Nov 23, 2017 at 4:23 AM, Arthur Zakirov
<a.zakirov@postgrespro.ru> wrote:
> I've attached new version of the patch. It is a little bit simpler now than the previous one.
> The patch doesn't handle backslashes now, since there was a commit which fixes quoted-substring handling recently.
> Anyway I'm not sure that this handling was necessary.
>
> I've checked queries from this thread. It seems that they give right timestamps and work like in Oracle (except
differentmessages).
 
>
> The patch contains documentation and regression test fixes.

I'm guessing that commit 11b623dd0a2c385719ebbbdd42dd4ec395dcdc9d had
something to do with the following failure, when your patch is
applied:

     horology                 ... FAILED

========= Contents of ./src/test/regress/regression.diffs
*** /home/travis/build/postgresql-cfbot/postgresql/src/test/regress/expected/horology.out
2018-01-11 17:11:49.744128698 +0000
--- /home/travis/build/postgresql-cfbot/postgresql/src/test/regress/results/horology.out
2018-01-11 17:18:53.988815652 +0000
***************
*** 2972,2978 ****
  SELECT to_timestamp('2011-12-18 11:38 -05',    'YYYY-MM-DD HH12:MI TZH');
           to_timestamp
  ------------------------------
!  Sun Dec 18 08:38:00 2011 PST
  (1 row)

  SELECT to_timestamp('2011-12-18 11:38 +05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
--- 2972,2978 ----
  SELECT to_timestamp('2011-12-18 11:38 -05',    'YYYY-MM-DD HH12:MI TZH');
           to_timestamp
  ------------------------------
!  Sat Dec 17 22:38:00 2011 PST
  (1 row)

  SELECT to_timestamp('2011-12-18 11:38 +05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
***************
*** 2984,2990 ****
  SELECT to_timestamp('2011-12-18 11:38 -05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
           to_timestamp
  ------------------------------
!  Sun Dec 18 08:58:00 2011 PST
  (1 row)

  SELECT to_timestamp('2011-12-18 11:38 20',     'YYYY-MM-DD HH12:MI TZM');
--- 2984,2990 ----
  SELECT to_timestamp('2011-12-18 11:38 -05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
           to_timestamp
  ------------------------------
!  Sat Dec 17 22:18:00 2011 PST
  (1 row)

  SELECT to_timestamp('2011-12-18 11:38 20',     'YYYY-MM-DD HH12:MI TZM');
======================================================================

-- 
Thomas Munro
http://www.enterprisedb.com


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