NULL Values - Handling Missing Data1 / 10
Null means there is no value. It means there is no data at all for a given value within a record.
Null and 0 are different. 0 is a real number, and null means there is no number at all.
Null and an empty text string ('') are also different. An empty string is a valid string of text with 0 characters. Null is nothing.
Null and 0 are different. 0 is a real number, and null means there is no number at all.
Null and an empty text string ('') are also different. An empty string is a valid string of text with 0 characters. Null is nothing.
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