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24 sty 2013 · If you're just checking for NULL values, you might try ISNULL() and cast the date as a varchar. SELECT ISNULL(CAST(fu.SentOutDate AS VARCHAR(50)), '') AS SendOutDate FROM tablename
17 lis 2015 · If you're checking whether or not the value is NULL, there is no need to convert it to a date, unless you wanted to return a date value (which you don't seem to). Instead, use: SELECT ISNULL( DOB , '') Which will return '' if the value is NULL. A NULL date is NULL (no value).
The SQL Server ISNULL() function lets you return an alternative value when an expression is NULL: SELECT ProductName, UnitPrice * (UnitsInStock + ISNULL(UnitsOnOrder, 0)) FROM Products;
It is important to understand that a NULL column value is different than having a blank (empty string) or 0 value in a column. eg. ' ' or (empty string) <> NULL, 0 <> NULL. Let’s take a look at a few examples to illustrate these points.
23 lut 2017 · I have 3 columns with different dates. I need a function that: IF Column Date1 is empty, take Column Date2, and if this one is empty, take Column Date3. If i use Column (Date1)="", it says DAX comparison cant compare Date with Text, the same happen when I use 0 or null.
10 gru 2019 · Lets look at the difference between Null and Empty as given below: Null can be a unknown value or an absence of a value, where as an Empty or Blank string is a value, but is just empty. Null can be used for string, Integer, date, or any fields in a database where as Empty is used for string fields.
20 maj 2022 · If I try to convert my Date column to VARCHAR in order to be able to use ISNULL, then the way my column displays dates gets distorted. Is there any way to solve this problem? ISNULL(DateSent, 'N/A')
