Yes I overlooked using JOIN. Used to use JOIN for multiple tables in my old system. If you are not up on Joins I have an example I can send.
David Bolen-2 wrote: > > Peter Jin <jinyup...@gmail.com> writes: > >> Grouping can not solve my issue because it works on one data source only. >> In >> my case, data for a user scattered in 5 tables. UNION might be a way to >> combine all tables to a data source, but I can not use it either >> (explained >> in the first post). any thoughts? > > It's still somewhat unclear without knowing more about your table > structure, but if you just mean that you have a reasonably normalized > schema where the relevant information is stored in several tables with > appropriate foreign key relationships (this can be true even if normal > access is controlled by an ORM like Hibernate), is there a reason your > report query can't just join the relevant tables together, grouping > the result by user? > > If you mean 5 completely distinct data sources (e.g., separate > databases), then another thought (if you have control of the code > rendering the report) might be to implement a custom data source that > itself performs the integration from the multiple data sources, even > if via 5 distinct queries. From the Jasper engine's perspective it > would still be utilized as a single data source for the report. > > -- David > > > ------------------------------------------------------------------------------ > 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 > > -- View this message in context: http://www.nabble.com/How-about-loop-a-sub-report--tp23847733p23866152.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
