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ISNULL(a.PolicySignedDateTime,aq.Amount) AS 'Signed Premium', But I want to see if "a.PolicySignedDateTime" is not null. Is there a easy function to do this which does not involve using a "if" statement? Cheers guys
11 cze 2014 · You can use the String Methods IsNullOrEmpty or IsNullOrWhiteSpace to create you own function something like this. Public Function TestNull(value As String, defaultValue As String) as String If String.IsNullOrEmpty(value) Then Return defaultValue Else Return value End If End Function
21 sty 2022 · Use the IsNull function to determine whether an expression contains a Null value. Expressions that you might expect to evaluate to True under some circumstances, such as If Var = Null and If Var <> Null , are always False .
The ISNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression.
3 wrz 2024 · Return types. Returns the same type as check_expression. If a literal NULL is provided as check_expression, ISNULL returns the data type of the replacement_value. If a literal NULL is provided as check_expression and no replacement_value is provided, ISNULL returns an int.
The ISNULL () function is used to check if a value is null and if it is will return the replacement value specified when calling the function. Understanding NULL Values. Before we get into the details of the function it is important to make sure we understand what a NULL value is in SQL Server.
1 paź 2024 · If your data contains null values, use the Nz() function to protect your expressions from this error. Specifically, Nz() returns a value other than Null when it encounters Null as follows: GrandTotal = Subtotal + Nz(Shipping)
