Hive date format matching - hadoop

Question

How can i match particular date format in hive query, as i have to get those rows having date format other than max of rows.
Eg. My max of rows have date format as MM/dd/yyyy and i have to list all rows other than above format
+----------------------------+--------------------------+--------------------+-----------+
| AllocationActBankAccountID | GiftCardActBankAccountID | UpdateTimeStampUtc | Date |
+----------------------------+--------------------------+--------------------+-----------+
| 14 | 14 | 41:39.8 | 4/19/2016 |
| 14 | 14 | 37:16.4 | 4/20/2016 |
| 14 | 14 | 52:15.2 | 4/21/2016 |
| 14 | 14 | 52:15.2 | 2/11/2019 |
| 14 | 14 | 52:15.2 | 12-Feb-19 |*
| 14 | 14 | 41:39.8 | 2/13/2019 |
+----------------------------+--------------------------+--------------------+-----------+
I want to get * marked data (Date = 12-Feb-19)

Answer 1

select *
from mytable
Where date not rlike '^([1-9]|1[0-2])/([1-9]|[1-2][0-9]|3[0-1])/(19|20)\\d{2}$'
or
select *
from mytable
Where not
(
date rlike '^\\d{1,2}/\\d{1,2}/\\d{4}$'
and cast(split (date,'/')[0] as int) between 1 and 12
and cast(split (date,'/')[1] as int) between 1 and 31
and cast(split (date,'/')[2] as int) between 1900 and 2099
)
or
select date
from mytable
Where coalesce(from_unixtime(to_unix_timestamp(date,'M/d/y')),'0000-01-01')
not between date '1900-01-01' and date '2099-12-31'