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Asked: 2026-06-08T12:09:32+00:00

Background I have a Crystal Report. For multiple items entered into a parameter (which

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Background

I have a Crystal Report.

For multiple items entered into a parameter (which I believe becomes a string array), I would like it to group by those values and then run a number of sub-reports for each group item.

Goal

For items entered as part of a parameter (which allows multiple items), use those items as a group so that I can see multiple sub-reports for those items (including if no data can be found for a given item).

To clarify, the desired process is:

  • User runs the report
  • User is prompted to enter one or more item numbers into the ItemNumbers parameter
  • The ItemNumbers parameter is used to create groupings
  • The groupings run several sub-reports for each group (presumably in the group footer)
  • The users see the results (or non-results) for each of the subreports under each item group.

Roadblocks / attempts so far

  • Tried to use the parameter as the grouping. This isn’t possible as it does not show up in the list of things I can select for a grouping.
  • Tried to use a formula to hold the value of the parameter. This is not possible because formulas cannot result in an array.
  • Tried to create a StringArray variable to hold the parameter entries, but since it also must be referenced in a selection formula and formulas can’t be arrays, this failed.
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1 Answer

  1. Editorial Team

    You can’t group on a parameter field. You will need to use it to filter your recordset, then group on one of its (recordset’s) fields.

    ** edit **

    I would create a number of queries that compare the individual transaction tables to the ‘main’ table (LEFT OUTER JOIN), then UNION these queries. Create a report, using this query as the source of a Command object.

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