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Defining summary statistics – PB Docs 2021 – PowerBuilder Library

Defining summary statistics – PB Docs 2021

Defining summary statistics

When you generate a crosstab, the columns and rows are
automatically totaled for you. You can include other statistical
summaries in crosstabs as well. To do that, you place computed fields
in the workspace.

To define a column summary

  1. Enlarge the summary band to make room for the
    summaries.

  2. Select Insert>Control > Computed Field from the menu
    bar.

  3. Click the cell in the summary band where you want the
    summary to display.

    The Modify Expression dialog box displays.

  4. Define the computed field.

    For example, if you want the average value for a column,
    specify avg(units for all), where units is the column providing
    the values in the crosstab.

    For example, this is a crosstab that has been enhanced to
    show averages and maximum values for each column. This is the
    Design view:

    cros23.gif

    This is the crosstab at runtime:

    cros24.gif

To define a row summary

  1. Select Insert>Control > Computed Field from the menu
    bar.

  2. Click the empty cell to the right of the last column in the
    detail band.

    The Modify Expression dialog box displays.

  3. Define the computed field. You should use one of the
    crosstab functions, described next.


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