Re: Driver behaves differently with prepareThreshold and timestamp fields when daylights is active (was Re: Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102)

From: Vladimir Sitnikov <sitnikov(dot)vladimir(at)gmail(dot)com>
To: Edson Richter <edsonrichter(at)hotmail(dot)com>, List <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: Driver behaves differently with prepareThreshold and timestamp fields when daylights is active (was Re: Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102)
Date: 2016-01-11 22:31:37
Message-ID: CAB=Je-GLAWr99jb6F3KmGksNm-F0V5eX2=3Ais1vGVDns6QpjA@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers pgsql-jdbc

Here's the fix:
https://github.com/pgjdbc/pgjdbc/commit/642b48a787098a6c5a068710bdbbf9f1b11f3aac

You can try it via Maven Central's <version>9.4.1208-SNAPSHOT</version>

I wonder if there is anybody from Portugal on the list?
Can you explain how you represent 2000-03-26 00:00:00?

As far as I understand, somewhere near 26th March Atlantic/Azores
skips from 00:00:00 to 01:00:00.
See http://www.timeanddate.com/time/change/portugal/ponta-delgada-azores
for 2000-03-26 00:00:00 -> 01:00:00

This causes troubles since java.util.Date is supposed to be 2000-03-26
00:00:00 Atlantic/Azores, however there is no such thing like
"2000-03-26 00:00:00 Atlantic/Azores" in Java.
If you try to use calendar.set(Calendar.HOUR_OF_DAY, 0), then you get
01:00:00 back.

This caused me to add exception to the expected results:
https://github.com/pgjdbc/pgjdbc/commit/642b48a787098a6c5a068710bdbbf9f1b11f3aac#diff-b318f589843d60530d1eada03263c1b0R895

Vladimir

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Vladimir Sitnikov 2016-01-11 22:35:00 Re: Driver behaves differently with prepareThreshold and timestamp fields when daylights is active (was Re: Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102)
Previous Message Andres Freund 2016-01-11 22:24:45 Re: Speedup twophase transactions

Browse pgsql-jdbc by date

  From Date Subject
Next Message Vladimir Sitnikov 2016-01-11 22:35:00 Re: Driver behaves differently with prepareThreshold and timestamp fields when daylights is active (was Re: Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102)
Previous Message Vladimir Sitnikov 2016-01-11 20:54:10 Re: Driver behaves differently with prepareThreshold and timestamp fields when daylights is active (was Re: Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102)