Which values can be NULL?

Which values can be NULL?

A NULL value in a table is a value in a field that appears to be blank. A field with a NULL value is a field with no value. It is very important to understand that a NULL value is different than a zero value or a field that contains spaces.

How do I enable NULL values in SSRS?

And SSRS does not give this value either when you select “Allow Null Value”. So the only way that you can add this value to the dropdown is to edit the dataset query and add a string value named “NULL” to it. Now for the dataset parameter set the value “NULL” as the default value.

Are two NULL values same?

In SQL null is not equal ( = ) to anything—not even to another null . According to the three-valued logic of SQL, the result of null = null is not true but unknown. With is [not] distinct from SQL also provides a comparison operator that treats two null values as the same.

Can a parameter accept null values?

In SSRS a multi-value parameter cannot include a NULL value, so users can’t filter the data for NULL values. Your requirements state a need to be able to filter the data for NULL values, so in this tip I will demonstrate how to allow NULL values in a multi value SSRS report parameter.

How do you handle null values in SSRS expression?

Here’s a solution modeled off of SQL’s ISNULL function:

  1. Right click on the Report Document and go to Report Properties.
  2. Navigate to the Code tab and add the following function: Public Function IsNull(input As Object, defaultValue As Object) As Object Return IIf(input Is Nothing, defaultValue, input) End Function.

Can a null value be included in a multi value report?

Your SQL Server Reporting Services (SSRS) report has a multi value parameter, but it doesn’t show NULL in the parameter drop down along with the other parameter values. In SSRS a multi-value parameter cannot include a NULL value, so users can’t filter the data for NULL values.

How to remove multiple null values from a list in Java?

Sometimes for whatever reason there are null values in the list and I have to remove them. You might had a similar problem where you needed to remove multiple occurring value from a lists in java. There are a few ways you can approach this problem. You you can remove each occurrence of a list element one at a time.

How to allow null value in multi value parameter in SSRs?

Steps to allow NULL value in Multi Value Parameter in SSRS. SizeDataset is responsible to return the list of values for the ProductSize report parameter. We have to modify SizeDataset in such a way that NULL can be displayed in the Productsize report parameter dropdown list.

How to get null value in report parameter?

SizeDataset: This dataset will be used to get a list of values for the ProductSize report parameter. This dataset will return one NULL value. You can verify it. ReportDataset has one query parameter named @ProductSize, so SSRS will automatically create one report parameter name as ProductSize.