I have a report with several sub-reports. The sub-reports use different java.sql.Connection's. I have set parameters for the different connections in the master report and use the "connectionExpression" element for each sub-report to define the appropriate connection parameter to use. Is there a way when previewing the master report in iReport to specify the connection to use? I can't seem to find any way to do this and the sub-reports always come back blank.
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I am new to crystal and want to understand the basics of subreports.Is it that main report is always executed before subreport?What if the subreport is placed in report/group header?If there are multiple subreports which are either linked or not linked to main report, what would be the order of execution in that case?Does it depend on positioning of report?
I have read many articles and got mixed responses. Please help me in understanding these concepts
Subreports are last to get processed in each section.
The key implication is that if you intend to pass a value from a subreport to the main report via a shared variable, you can't expect a formula in the same section to obtain that value. You must pass the value to a formula in a section below.
how to publish a main report which has multiple sub-reports for example main report A consists of a sub-report B and sub-report B consists of sub-report C and they have different parameters, for example report B has different parameter and report c has different parameter. i can able to publish all three reports but i am getting an error with arguments (parameters are unable to call) from the main report
Make sure you connected all the subreports(and subdatasets) with your main report,
(simple right click on dataset and option to connect to main dataset) and make sure to configure your jasper server of .jrxml so that it includes all the necessary resources
The studio "knows" where it can find all the required files, but the "knowledge" ends there.
I have a Crystal Reports report which contains a main report and three subreports. The data tables used in subreports are linked with main report's data table. In subreports also I've given linking.
Now when I have data in subreports, all comes out fine. But if there is no data in subreports, the main report is also shown as blank.
How to make the main report show results despite (some) sub reports being empty?
Subreports only run after the main report has retrieved it's data. So unless you have set up some fairly complex suppression conditions using shared variables, there is no way that a linked subreport can 'blank' the main report. You can confirm this by running the same report criteria with all of the subreports deleted. You will likely still have the same blank main report. The cause is more likely to be an inner join in the main report.
And there is one final possibility that I hope no one finds insulting. Depending on how the subreports are arranged, it could be possible that adding the subreports causes the first page to be blank while the report starts on the second page. This is caused by the 'keep together' properties of sections and groups. I have had clients call me to troubleshoot blank reports when the data was on page 2.
I have a Jasper report which has multiple sub-reports, all of them have separate values. These reports are executed multiple times, is there a configuration I can make so I can execute a specific report only once?
Found the answer for the report
It was adding a page break and add a new subreport for the same
I am using crystal reports 2008, I want to use multiple data sources in one report. One is connecting informix and another is connecting redbrick data source. Both are independent data source and doesnt have any common value to co -relate them. Can we have that option?
Pleae advice?
Have you tried it already? Crystal Reports allows you to add tables, via Database Expert, from multiple datasources. It will warn you that it may not work, but many times it does.
I had the same problem.
But now its OK after using subreport.
ie. Create the subreport with just the details section and put in inside the main report.
According to my colleague,
For "independent data sources", that have no relationship at all,
we should use subreport.