Author Topic: Is a NULL value same as zero or a blank space?If not then what is the difference?  (Read 529 times)

Offline Hubert

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Hi everyone, I have a question to submit because I can not find the answer elsewhere, is a null value same as zero or a blank space? if not then what is the difference? Thank you kindly inform me please to the question.



Offline Bartosz

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Re: Null value same as
« Reply #1 on: May 13, 2018, 01:21:50 PM »
1.A NULL value represents the absence of a value for a record in a field (others softwares call it also a missing value). 2.An empty value is a "field-formatted" value with no significant data in it. 3.NULL isn't allocated any memory, the string with NUll value is just a pointer


 

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