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Friday, April 20, 2007
In Crystal Report, you can right click on any field or object and select Object Size and Position.
This can help you align two objects horizontally or vertically using same x and y coordinate and also allow you to set the same height and width. Very useful, when you need to delete one field and add another from different source. Just note down the all the values before deleting and set the values after adding the new object.
Sub reports allows to use another query as a data source, different from the main query. You can have as many subreports as you want. Sub reports can not have another sub report inside it. One of the challenge is to link the sub report parameters with main report, so that sub report query is executed for the every row retrieved from the main report. This is easy.
I will explain this using a Sample. Let's say we are designing a report that prints user profile information. The main query is based on psoprdefn and is used in the main report. The Sub report is based on psroleuser and is used in the subreport to print role names for each user selected in the main query.
Click Insert -> Sub Report
Select Create a Sub Report and Type in PSROLEUSER and click on Report Expert.
Click on Database and Select the Query name. Complete the rest of steps by clicking on Next. Once you return to main Insert Subreport dialog box, Select Link tab. You can also change links for sub report later on by right clicking on sub report and selecting Change Subreport links.
Select Oprid from Available Fields and Click on > button to move it to Fields(s) to link To.
Now Click on Subreport Parameter fields to use:
Click on tiny Scroll bar, (Note: Do not use ?Pm-GF_C_PSOPRDEFN.OPRID as your parameter to link to).
Once you see the parameter field for the sub query i.e. user id select it.
Note: Both main query and subquery has a common parameter i.e. oprid or Userid. We need to match the Oprid field from main query and assign it to Parameter field of the sub query and do not use autogenerated Crystal Report parameter. There may be other ways to achieve the same results, but i found this works best.
Once you insert the subreport to main report, Right click on it and select border and colors. Set Line style to none for Left, Right, Top and Bottom. Right click on Subreport and Select Edit SubReport. You may want to Delete Report Header and Report footer in the subreport and arrange the fields and add any additional information you need. Also delete the Print Date special field.
Note: This is based on Crystal Report 8.5
If you have a linked sub report in Main Crystal Report, every time you open the main report, it re imports the sub report if it founds the sub report in the same location. This is despite the fact that Re-import Subreports when Opening Reports check box is unchecked.
This seems to me a bug. Similar bug in Crystal 10 has been reported on businessobject support web site.
This creates a annoying behavior, as Crystal report will remove the links between main report and sub report. Only workaround I have found is to rename the sub reports or move them to other folders, once they are imported in main report. If Crystal Report does not find the sub report in the original location, it does not re import the sub report.
If any body has encountered the similar issues, please post it in the comments section.