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Date Subtraction Off By A Fraction 1.0000E-38 (Doc ID 1907661.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 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 )

<some action>


 The following case demonstrate the behavior:-



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