hadoop - Split function in hive not working -


i have column name date_of_birth date in format 1978-07-23.

i trying code splitting, not working.

select    case when split(date_of_birth,'\\-')[2] < 1900    '1900-01-01 00:00:00'     else cast(from_unixtime(unix_timestamp(date_of_birth, 'm/d/yyyy')) string) end dob  rd_hr.wd_employees_history

after converting date yyyy/mm/dd, take greatest value between '1900-01-01' , date_of_birth:

select      greatest(from_unixtime(unix_timestamp(date_of_birth, 'mm/dd/yyyy')), '1900-01-01 00:00:00') dob  rd_hr.wd_employees_history

casting date return null, see: https://cwiki.apache.org/confluence/display/hive/languagemanual+types#languagemanualtypes-timestampstimestamptimestamps


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