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Allow Null Values (as opposed to Optional parameters) is available only for Stored Procedure parameters.<br />

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Allow Null Values (as opposed to Optional parameters) is available only for Stored Procedure parameters.


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I am building a report in Crystal Reports and have created two parameter fields with a data type of date. &nbsp;I want to allow the entry of NULL values, however, Crystal won't allow this. &nbsp;Is there something I'm not seeing?
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I am building a report in Crystal Reports and have created two parameter fields with a data type of date.  I want to allow the entry of NULL values, however, Crystal won't allow this.  Is there something I'm not seeing?

How do I set a parameter in Crystal Reports XI to accept NULL values?

A database report is the formatted result of database queries and contains useful data for decision-making and analysis. Most good business applications contain a built-in reporting tool; this is simply a front-end interface that calls or runs back-end database queries that are formatted for easy application usage.

DB Reporting Tools

Crystal Reports is a business intelligence application from SAP SE. It is used to graphically design data connections and report layouts from a wide range of data sources including Excel spreadsheets, Oracle, SQL Server databases and Access databases, BusinessObjects Enterprise business views, and local file-system information. Report designers can place fields from these sources on the report design surface, and can also deploy them in custom formulas (using either BASIC or Crystal's own syntax), which are then placed on the design surface. Crystal Reports also supports subreports, graphing, and a limited amount of GIS functionality.