stag-join - joins two stag files together based around common key

       -p|parser FORMAT
           FORMAT is one of xml, sxpr or itext, or the name of a perl module

           xml assumed as default

       -w|writer FORMAT
           FORMAT is one of xml, sxpr or itext, or the name of a perl module

       Performs a relational-style INNER JOIN between two stag trees; this effectively merges two files
       together, based on some kind of ID in the file

       currently not event based, so may not be memory efficicent. could be easily rewritten to be event based

       stag-join - joins two stag files together based around common key

       Data::Stag

       This script is a wrapper for the method

         Data::Stag->ijoin()

perl v5.34.0                                       2022-06-12                                      STAG-JOIN(1p)

         stag-join  -w xml country/city_id=capital/capital_id countries.xml capitals.xml

         stag-join  -w itext gene/tax_id=species/tax_id genedb.itext speciesdb.itext