Why subreports are added only in detail band and crosstabs in summary? How actually the bands are processed in Jaspersoft? - ireport

I'm using subreports in Jaspersoft. Why we have to add subreports only in detail band why not in any other band?

I'm new to jasper reports so can anybody provide a tutorial name or give some detail explaination?
The iReport Ultimate Guide is very helpful guide.
why we have to add subreports only in detail band why not in any other band?
The subreport could not be placed to the band without overflow support.

The premise is not correct. It's common to put subreports in other bands.

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Overlap Subreports SSRS

I was trying to create one report with several pages doing this:
I've created like 3 reports with different embedded datasets (each report has nothing to do with the others).
I've created a main report where i put the 3 subreports, overlaying them.
In SSRS web view i can change the the pages in order to see each subreport in a different page.
The problem is when i tried to export the report in PDF, there is not a "page break" so the first page contain all the reports overlayed.... this is a big issue....
Is there a way to fix this?
You can enclose sub reports in a rectangle and provide page break properties to the rectangle.
1st sub-report should be within 1st rectangle and as is.
You can also make sure, sub-reports are one-by-one in the design for proper page breaks.

pdf format cutting the last 4 columns of a table in BIRT 4.5 (Auto Layout)

Using BIRT 4.5.
I have a table with 16 columns and so it spreads out on the viewer. I am using Auto Layout and not Fixed Layout to accommodate all 16 columns.
When I download the Pdf version of report from BIRT Viewer the report is cutting the columns on the right of the table(4-5 columns).
I did some research and it said to use Fixed layout but it is not possible in the scenario.
I saw one post here which said something like this - "InterfaceIPDFRender, set your PAGE_OVERFLOW = FIT_TO_PAGE_SIZE and that should do it"
What does the above line mean? Is it that I need to make changes in jar of library and then recompile the code of BIRT VIEWER? Can someone please help on this.
Regards,
Ajay B
I was able to change the Type pf Master page to US Super B and change the width of Master page. This allows pdf to accommodate the whole table.
Regards,
Ajay B

How to make changes in sub-report added in detailed section?

How to make changes in sub-report in detail section when it is not visible ?
I want to make changes in sub-report which is added in detail section
at design time.
Problem : Details section is not visible.
Explanation : I have Report A and two sub-reports B and C. Firstly, when i have designed the report i was able to make changes. But when i copied the report to some different location to make changes in it, the detail section with sub-reports is not visible.
Could any one please tell what problem is this.
I am stuck of this. Please help.

How to add a tablix control to a report?

This seems like a simple question but I cannot find anything on adding a tablix control to an SSRS report.
I don't see this control in the toolbox in bids or in report builder 3.0.
I'm using SSRS 2008 R2.
Can someone kindly tell me how to add this control to a report?
I found the answer here:
The table, matrix, and list data regions are represented on the ribbon by templates for the underlying tablix data region. When you add one of these templates to a report, you are actually adding a tablix data region that is optimized for a specific data layout. By default, a table template displays detail data in a grid layout, a matrix displays group data in a grid layout, and a list displays detail data in a free-form layout.
Could it be any more unintuitive?

How can I avoid to get the rows of two different sections alternated?

First of all, I'm really a newbie in Cystal Reports, so please have patience with me on this.
So, I've got to display two lists, independant, one below the other. To accomplish this, I manage to insert two detail sections, both with properties from different commands.
But the preview is not showing what I would expect...
As you may see from the highlighted rows, both lists are mixed, which is not what I'm looking for.
Could anyone tell how can i do this?
This is default behavior of crystal report.
Add two linked sub reports in detail sections respectively.
If you want to display two unlinked datasets your best option is to use (a) subreport(s).
Place one command in the main report to return your first dataset which you can display in detail section.
Place a subreport with your second command in one of the report footer sections (inside the subreport you can place the dataset fields in the detail section).

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