I have two databases in project: ‘main’ and ‘secondary’.
Some of data for report located in main database, some data in secondary (legacy database).
I cant create SQL or JPQL query over two datastores, but I need to join datasets on some field.
In documentation there is field “Link field”. I want to use this feature, but there is no any info how to use it.
Is any info how to join two or more datasets without groovy?