apache - Hive Unix Timestamp -

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i'm not getting expected result unix_timestamp of hive

for example :

select from_unixtime(unix_timestamp('2015/02/01', 'yyyy/mm/dd')) table limit 1;

output :

2014-12-28 00:00:00 time taken: 0.287 seconds, fetched: 1 row(s)

i expected return 2015-02-01 , resulted else. understand because of epoch time ?

you have caps in date format. try using lowercase:

select from_unixtime(unix_timestamp('12/02/01','yyyy/mm/dd') table;

results in: 2015-02-01 00:00:00

also can strip off time using:

to_date(from_unixtime(unix_timestamp('12/02/01','yyyy/mm/dd'))

results in: 2015-02-01


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