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select * from PERS_CONTRACT_MANAGE2 where 
INVALID_DATE> 
 TO_DATE('2010-04-09 00:00:00.0','YYYY/MM/DD HH24:MI:SS.FF1')

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select * from PERS_CONTRACT_MANAGE2 where  
INVALID_DATE>  
 TO_DATE('2010-04-09 00:00:00','YYYY-MM-DD HH24:MI:SS')


SQL code:
SELECT *
from PERS_CONTRACT_MANAGE2
WHERE INVALID_DATE > to_timestamp('2010-04-09 00:00:00.0', 'YYYY/MM/DD HH24:MI:SS.FF1')


SQL code:
select TO_TIMESTAMP('2010-04-09 00:00:00.0','yyyy-mm-dd HH24:Mi:SS.FF1')


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