The Oracle time format and integer format are converted to each other, and the oracle time format is integer.

Source: Internet
Author: User

The Oracle time format and integer format are converted to each other, and the oracle time format is integer.

If the time field of the Oracle database is set to the "NUMBER" type, the query Time column is displayed as a numerical value, such as the "1241450728000" style, which is not readable; if the update time is in the "2009/5/4 15:25:28" style, the ORA-01722: invalid number will be prompted and cannot be updated.

In this case, we need to convert the format as follows:

-- Date to long example select sysdate, (sysdate-to_date ('2017-01-01 ', 'yyyy-mm-dd ')) * 24*60*60*1000 as integer format from dual; -- convert long to dateselect to_date ('2017-01-0100:00:00 ', 'yyyy-mm-dd hh24: mi: ss') + 1241450728000/1000/24/60/60 from dual;


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