CumulativePercent
DataWindow expression function
Description
Calculates the total value of the rows up to and including the
current row in the specified column as a percentage of the total value of
the column (a running percentage).
Syntax
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1 |
CumulativePercent ( column { FOR range } ) |
|
Argument |
Description |
|---|---|
|
column |
The column for which you want the cumulative value of |
|
FOR range (optional) |
The data that will be included in the cumulative
For Crosstabs, specify CROSSTAB for
For Graph and OLE objects, specify one of
|
Return value
Long. Returns the cumulative percentage value.
Usage
If you specify range, CumulativePercent restarts the accumulation at
the start of the range.
For graphs and OLE objects, you do not select the range when you
call the function. The range has already been determined by the Rows
setting on the Data property page (the Range property), and the
aggregation function uses that range.
Settings for Rows include the following:
-
For the Graph or OLE presentation style, Rows is always
All. -
For Graph controls, Rows can be All, Page, or Group.
-
For OLE controls, Rows can be All, Current Row, Page, or Group.
The available choices depend on the layer the control occupies.
In calculating the percentage, null values are ignored.
Not in validation rules or filter expressions
You cannot use this or other aggregate functions in validation
rules or filter expressions.
Using an aggregate function cancels the effect of setting Retrieve
Rows As Needed in the painter. To do the aggregation, a DataWindow
object always retrieves all rows.
Examples
This expression returns the running percentage for the values that
are not null in the column named salary:
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1 |
CumulativePercent(salary) |
This expression returns the running percentage for the column named
salary for the values in group 1 that are not null:
|
1 |
CumulativePercent(salary for group 1) |
This expression entered in the Value box on the Data property page
for a graph returns the running percentage for the salary column for the
values in the graph that are not null:
|
1 |
CumulativePercent(salary for graph) |
This expression in a crosstab computed field returns the running
percentage for the salary column for the values in the crosstab that are
not null:
|
1 |
CumulativePercent(salary for crosstab) |
See also