IsNull returns True if expression is Null; otherwise, IsNull returns False. If expression consists of more than one variable, Null in any constituent variable causes True to be returned for the entire expression.

In Microsoft SQL Server 2008, you run a query that uses the ISNULL () function to select values that are in a nullable column. The table that contains the nullable column is joined with another table at the …

Sometimes you need to check if a cell is blank, generally because you might not want a formula to display a result without input.

Description Each of these functions, referred to collectively as the IS functions, checks the specified value and returns TRUE or FALSE depending on the outcome. For example, the ISBLANK function …

Therefore, a database that models a real world entity, such as a business, must be able to record information as missing. You can use the IsNull function to determine if a field or control contains a …

varResult = IIf(IsNull(varFreight), _ "No Freight Charge", varFreight) In the next example, the optional argument supplied to the Nz function provides the string to be returned if varFreight is Null. varResult …

Wichtig: Verwenden Sie die IsNull -Funktion, um zu ermitteln, ob ein Ausdruck einen Null -Wert enthält. Ausdrücke, für die Sie unter bestimmten Umständen erwarten, dass sie als True ausgewertet …

IsNull restituisce True se espressione è Null; in caso contrario, IsNull restituisce False. Se l'espressione è costituita da più variabile, null in una variabile costituente restituisce True per l'intera espressione.

Скористайтеся функцією IsNull , щоб визначити, чи містить вираз Null-значення . За деяких обставин вирази, які можуть повертати значення True , наприклад If Var = Null та If Var <> Null, …

Important : Utilisez la fonction IsNull pour déterminer si une expression contient une valeur Null . Les expressions que vous pouvez vous attendre à évaluer sur True dans certaines circonstances, telles …

Belangrijk: Gebruik de functie IsNull om te bepalen of een expressie een Null -waarde bevat. Expressies waarvan u zou verwachten dat het resultaat True is onder bepaalde omstandigheden, zoals If Var = …