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Activity › Forums › Salesforce® Discussions › What is the Difference between isBlank and isNull in Salesforce?

  • MOHIT

    Member
    February 11, 2020 at 6:54 PM

    ISBLANK determines if an expression has a value then returns TRUE if it does not. If an expression contains a value, then this function returns FALSE.Whereas,
    ISNULL determines if an expression is null (blank) then returns TRUE if it is. If the expression contains a value, then this function returns FALSE.

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  • Pooja

    Member
    February 12, 2020 at 2:22 PM

    The ISBLANK formula field returns a TRUE while the ISNULL does not. This is because, when a Text field is left EMPTY, it is internally assigned with an EMPTY STRING and hence it is not NULL. The technical meaning of NULL is that it is not assigned with a memory for storage. Since we need some memory for storing an EMPTY STRING, it is obviously not NULL.

    The ISBLANK returns a TRUE since the field does not carry anything(a value).

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