Create a Layout Calculation

Create a layout calculation to add run-time information to your report, such as current date, current time, and user name.

When you create layout calculations, unsupported functions do not appear in the Functions tab of the expression editor. Specifically, there is no Summaries folder, and some operators, constants, and constructs are also unavailable. These functions are not available because only the database can perform them. Report expressions and calculations based on layout expressions are performed in IBM® Cognos® Report Studio.

To see the complete list of functions available in the expression editor, except for report functions, create a query calculation. All functions are available when you create a query calculation because these calculations are performed in the database and not in Report Studio.

Procedure

From the Toolbox tab , drag Layout Calculation to the report.
In the Available Components box, define the calculation:
- To add data items that are not shown in the report, on the source tab , double-click data items.
- To add data items from a specific query, on the queries tab , double-click data items.
- To add functions, summaries, and operators, on the functions tab , double-click elements.
- To add a value that is derived from a parameter, on the parameters tab , double-click a parameter.
  Parameters define prompts, drill-through reports, and master detail relationships.
Tips:
- You can also type the calculation directly in the Expression Definition box.
- When typing date values, ensure that the date format is correct for your database type.
- To copy and paste expression components in the Expression Definition pane, you can use the copy button and the paste button .
For more information about creating expressions, see Using the expression editor.
Click the validate button .