How to convert a string to timestamp with milliseconds in Hive

Question

I have a string \'20141014123456789\' which represents a timestamp with milliseconds that I need to convert to a timestamp in Hive (0.13.0) without losing the milliseconds.

Answer 1

i had the date field in this form 2015-07-22T09:00:32.956443Z(stored as string). i needed to do some date manipulations. the following command even though little messy worked fine for me:)

select cast(concat(concat(substr(date_created,1,10),' '),substr(date_created,12,15)) as timestamp) from tablename;

this looks confusing but it is quite easy if you break it down. extracting the date and time with milliseconds and concat a space in between and then concat the whole thing and casting it into timestamp. now this can be used for date or timestamp manipulations.