Date Subtraction Off By A Fraction 1.0000E-38
(Doc ID 1907661.1)
Last updated on FEBRUARY 26, 2019
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
When you substract two DATE data types where the difference is only seconds , the value resulted is in a fraction of a day.
Hence , when multiplying by 86400 to convert to seconds a small fraction is added to the result (1.0000E-38) .
This may fail any decision making on comparing the result of subtraction to a know
For example :-
if (date_result = 26 )
The following case demonstrate the behavior:-
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