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What is null? Will digit zero and an empty string consider as null?
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Answer / Anesh Gupta
In QlikView, null represents an absent or unknown value. While a digit zero (0) is a number and an empty string ('') is a text, they are not considered as null by default. However, you can treat them as null using functions like ISNULL() or IFNULL(). For example: ISNULL(0) will return 1 if the argument is null.
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