Add support for Time64

[remilapeyre]

Signed-off-by: Rémi Lapeyre remi.lapeyre@lenstra.fr

[zilder]

Hi @remilapeyre,

thanks for your contribution! At first glance looks good. I'll do a more thorough review soon and will merge it then.

[remilapeyre]

Thanks @zilder, I tried to look carefully to find whether there was something special to do to handle timezones and time resolution (in the Parquet file or the PostgreSQL database) and after reading PostgreSQL source code I don't think it needs special treatment but I'm not sure about that.

[zilder]

Hi @remilapeyre,

As i understood parquet's time and timestamp types do not contain information on the timezone. They have isAdjustedToUTC boolean parameter, but without actual timezone information there is not much can be done about it.

One thing that wasn't taken into account in this pull request is time precision. Proposed patch implies that time is in microseconds. Though time64 type may also represent nanoseconds. Other than that the patch looks good.

[remilapeyre]

Hi thanks for the review, I had not the time to look at the nanoseconds yet but I will try to do it in the coming days.

[mkgrgis]

@remilapeyre , any activity here?