Re: Proposal for better support of time-varying timezone abbreviations

Michael Meskes <meskes@postgresql.org> writes:
> On Wed, Oct 15, 2014 at 09:50:16AM -0400, Tom Lane wrote:
>> The same thought had occurred to me.  Probably the main use of the
>> datetime parsing code in ecpg is for interpreting outputs from the
>> server, and (at least by default) the server doesn't use timezone
>> abbreviations when printing timestamps.  So maybe that's largely
>> dead code anyhow.  I would not propose back-patching such a change,
>> but we could try it in 9.5 and see if anyone complains.

> Agreed on all accounts.

>> A less drastic remedy would be to remove just those abbreviations
>> whose meaning has actually changed over time.  Eventually that
>> might be all of them ... but in the meantime, we could at least
>> argue that we weren't breaking any case that worked well before.

> This is what your patch did, right?

No, I did not touch ecpg's set of tokens at all, just changed the
representation of datetktbl to match the new backend coding.
I figured we could discuss behavioral changes separately.

I don't have a strong opinion about which of the above things to do ...
what's your preference?
        regards, tom lane