I am familiar with those functions, none of them is actually truncating a date. We can use those methods to help implement truncate method. I think truncating a day/ hour should be as simple as "truncate(...,"DD") or truncate(...,"HH") ".
On Thu, Nov 9, 2017 at 8:23 PM, Gaspar Muñoz <gmu...@datiobd.com> wrote: > There are functions for day (called dayOfMonth and dayOfYear) and hour > (called hour). You can view them here: https://spark.apache. > org/docs/latest/api/scala/index.html#org.apache.spark.sql.functions > > Example: > > import org.apache.spark.sql.functions._ > val df = df.select(hour($"myDateColumn"), dayOfMonth($"myDateColumn"), > dayOfYear($"myDateColumn")) > > 2017-11-09 12:05 GMT+01:00 David Hodefi <davidhodeffi.w...@gmail.com>: > >> I would like to truncate date to his day or hour. currently it is only >> possible to truncate MONTH or YEAR. >> 1.How can achieve that? >> 2.Is there any pull request about this issue? >> 3.If there is not any open pull request about this issue, what are the >> implications that I should be aware of when coding /contributing it as a >> pull request? >> >> Last question is, Looking at DateTImeUtils class code, it seems like >> implementation is not using any open library for handling dates i.e >> apache-common , Why implementing it instead of reusing open source? >> >> Thanks David >> > > > > -- > Gaspar Muñoz Soria > > Vía de las dos Castillas, 33 > <https://maps.google.com/?q=V%C3%ADa+de+las+dos+Castillas,+33&entry=gmail&source=g>, > Ática 4, 3ª Planta > 28224 Pozuelo de Alarcón, Madrid > Tel: +34 91 828 6473 >
