How to convert timestamp to oracle Date type
2010-09-02 16:04
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How to convert timestamp(milliseconds to 1970-1-1) to oracle Date type
* convert timestamp to date
select to_date( '1970-01-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss')+ 3600000
/86400000 as timestamp from dual
timestamp
-----------------------------
1970-01-01 01:00:00.0
* convert date to timestamp
select (to_date('2010-09-01 16:00:00','yyyy-mm-dd hh24:mi:ss')
- to_date('1970-01-01','yyyy-mm-dd'))*86400000 as aDate from dual
aDate
-----------------------------
1283356800000
Note: 86400000 = 24*60*60*1000 (total milliseconds of one day)
* convert timestamp to date
select to_date( '1970-01-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss')+ 3600000
/86400000 as timestamp from dual
timestamp
-----------------------------
1970-01-01 01:00:00.0
* convert date to timestamp
select (to_date('2010-09-01 16:00:00','yyyy-mm-dd hh24:mi:ss')
- to_date('1970-01-01','yyyy-mm-dd'))*86400000 as aDate from dual
aDate
-----------------------------
1283356800000
Note: 86400000 = 24*60*60*1000 (total milliseconds of one day)
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