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How to take parameters & fields from main report's table into subdataset ?


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I am using sample dataset to put  problem simply to understand,please dont suggest me to optimize/change mysql  logic/queries.

I have output of main query in .jrxml file(main table)


i am taking "book_id" as user input.

want to made  subdataset_1 by using "book_id" input & some fields from main table as


select  AuthMn,AuthFN  from main_table where BookID=$P{book_id}--->subdataset_1


select AuthMN from subdataset_1

3)printing subdatset_2 without using any widget from pallete of ireport (e.g. table,crosstab,charts..etc)


Can anyone guide my how to access main table's fields & parameters  in subdataset_1 ? &

accessing fields from  subdataset_1 to another dataset ?

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