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Calculation views can include measures and be used for multi-dimensional reporting or can contain no measures
and used for list-type of reporting. Calculation views can either be created using a graphical editor or using a SQL
editor. These various options provide maximum flexibility for the most complex and comprehensive business
requirements.
6.2.7 Creating Calculation Views
Calculation views are used to provide composites of other views. Essentially they are based on a join or union of
two or more data flows or on invoke of built-in or generic SQL functions.
Calculation views are defined as either graphical views or scripted views but not as SQLScript (for exceptions, see
below) depending on how they are created. They can be used in the same way as analytic views, however, in
contrast to analytic views it is possible to join several fact tables in a calculation view.
Graphical views can be modeled using the graphical modeling features of the SAP HANA Modeler. Scripted views
are created as sequences of SQL statements.
As mentioned previously calculation views are generally not created using SQLScript. There are however,
exceptions to this rule. SQLScripts with the following properties can be used in calculation views:
- No input parameters
- Always read-only (that is, do not make changes to the database)
- Side-effect free
You can use calculation views to derive values and key performance indicators(KPIs).
Note: The terms "attribute" and "columns" are used interchangeably in this procedure. They may denote a
table column, a particular data field of a table row, or the contents of such a data field. The respective
meaning should be clear from the context.
Procedure
1. In the Modeler perspective, expand the system node from the Navigator pane.
2. Expand the Content node.
3. Right-click the required package.
4. From the context menu, choose New Calculation View .
a. Enter a name and description.
b. Select the required package.
Create a Script-Based Calculation View
1. Choose SQL Script.
2. Select the required schema from the Default Schema dropdown list, for unqualified access in SQL.
Note: If you do not select a default schema, while scripting, you need to provide fully qualified names
of the objects used.
3. Select the required option from the Run With dropdown list, which identifies whose rights are to be considered
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while executing the calculation scenario.
P U B L I C
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SAP HANA Developer Guide
Setting Up the Analytic Model