Webastor - Programming Tips and Tricks

Programming language => Sql => Topic started by: Hubert on September 05, 2015, 02:35:41 PM

Title: Is a NULL value same as zero or a blank space?If not then what is the difference?
Post by: Hubert on September 05, 2015, 02:35:41 PM
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.
Title: Re: Null value same as
Post by: Bartosz 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