No. The NULL value is not the same as zero or a blank space. The following points explain their main differences:
A NULL value is a value, which is 'unavailable, unassigned, unknown or not applicable.' It would be used in the absence of any value. We can perform arithmetic operations on it. On the other hand, zero is a number, and a blank space is treated as a character.
The NULL value can be treated as an unknown and missing value, but zero and blank spaces differ from the NULL value.
We can compare a blank space or a zero to another blank space or a zero. On the other hand, one NULL may not be the same as another NULL. NULL indicates that no data has been provided or that no data exists.
