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Re: datetime / timezone (mysql jdbc) issues
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Re: datetime / timezone (mysql jdbc) issues


  • Subject: Re: datetime / timezone (mysql jdbc) issues
  • From: Lachlan Deck <email@hidden>
  • Date: Thu, 11 Feb 2010 17:14:03 +1100

On 11/02/2010, at 5:10 PM, Chuck Hill wrote:

> On Feb 10, 2010, at 9:49 PM, Lachlan Deck wrote:
>
>> I've been debugging a problem we've got where the fetched timestamp is 1 hour out for times that fall after (or close after) the date when day light savings comes off.
>
> That seems pretty normal for Java where a day is 24 * 60 * 60 * 1000 milliseconds, not a day like we usually think of it.  If I don't care about the time, I just set it to 12:00 noon.  So when Java adjusts the time, it is 11AM or 1PM, but at least on the correct day.  Is that what you are seeing?  Or am I misunderstanding the problem?

Yes. This is a timestamp / datetime (not a date only value).

The correct value should be 4pm Sydney time. But for this last one it's 5pm.

>> Viewing the data in mysql the times are correct for Sydney (unfortunately the deployment db is not in UTC but Australia/Sydney time... out of my hands). When fetching a list of records all of them have the same endTimestamp value .. but once we have an NSTimestamp the last record which falls over the boundary is wrong.
>
> I am having a hard time parsing that last sentence.

I'll try again :)
A list of records in the database with a field called 'endTimestamp' all have a value where their time-part == 4pm Sydney time. Once fetched, one of them is wrong.

with regards,
--

Lachlan Deck

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 >datetime / timezone (mysql jdbc) issues (From: Lachlan Deck <email@hidden>)
 >Re: datetime / timezone (mysql jdbc) issues (From: Chuck Hill <email@hidden>)

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