How do I make a field optional in SSRS?

5 Answers. Set the parameter to ‘Allow null value’ under General section. Null according to SSRS means it does not have to be set, thus making it optional. This lets the dataset know that if the variable is set then use it, else have an operator to have the value equal itself.

What are the parameters of report?

Parameters are one of the built-in collections that you can include in an expression in a report. Because expressions are used to define values throughout a report definition, you can use parameters to control report appearance or to pass values to related subreports or reports that also use parameters.

What is the main purpose of report parameter?

Report parameters allow you to control the report’s content, to connect related reports, or to use them as arguments in functions.

How do I add an optional parameter to a report?

Create an Optional Parameter With the report open and the Design tab selected, right-click the Parameters folder in the Report Data pane and select Add Parameter… In the Report Parameter Properties window, make the following entries and selections. Notice that Allow null value is checked.

What happens if a parameter does not allow nulls in SSRs?

When the parameter does not allow nulls, SSRS will not run the report if a value for the parameter is not supplied. By telling the report to allow nulls, SSRS will run the report regardless.

How can I prevent SSRs from running a report without data?

To accomplish this, two things need to be done. The first is to create an optional parameter, or a parameter that does not stop SSRS from running the report if no value for it is supplied.

How do I ignore a parameter in a report?

Include an OR clause that returns True if the parameter is null; that way, the WHERE clause will be True for every row of the query when the parameter is not used. Now, when you run your report, you can either supply a value for the parameter or just ignore it and the report will know what to do in each case.