Its hard to give advice when I have no real idea of your data structure, I am unsure why you would have seperate tables for differents users unless you mean graphically.
If you have 5 separate tables 1 for each user then UNION seems to be the only way to do it, unless you know Java, you could put the data into beans and use a bean datasource to build your report. I always find that subreports can normally be replaced with groups, I personally hate subreports...lol. Chris chr15athome wrote: > > Sorry I forgot to mention that the info I gave is based on using > iReport/jasperReports, not sure what you are using now but I definately > recommend iReport. > > Chris > > > chr15athome wrote: >> >> Hi Peter, >> >> If I understand your requirements correctly I think grouping would be >> better than having multiple subreports. >> >> Grouping the data on users allows you to create a seperate table for each >> user, you can also have a header and footer for each user and you can >> also perform calculations and have totals at the bottom of each group. >> >> Hope this helps. >> >> Chris >> >> >> Peter Jin wrote: >>> >>> Hi, >>> I may need to put several sub reports in the detail section in the >>> master report. So the sub reports will get loaded many times. Will this >>> cause significant performance issues? Does jasper cache data source for >>> report in this case? >>> >>> My case: >>> User's data are scattered in 5 tables and I need to put those data >>> together under a particular user. I don't want to use UNION because HQL >>> doesn't support it. In addition, Union 5 tables may result in a huge >>> SQL. I have to use one sub report for each table and iterate users in >>> master report and for each user iterate all sub reports to display data >>> relevant to that user. >>> >>> Is this viable or any other solution? >>> >>> Any comment is appreciated. >>> >> >> > > -- View this message in context: http://www.nabble.com/How-about-loop-a-sub-report--tp23847733p23849751.html Sent from the jasperreports-questions mailing list archive at Nabble.com. ------------------------------------------------------------------------------ OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get _______________________________________________ jasperreports-questions mailing list jasperreports-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jasperreports-questions
