So far, we have seen how
tMap can be used to transform and filter input data. But this is only a part of the
tMap functionality. The
tMap component is also the main component used to perform join logic between multiple input sources. This recipe demonstrates the basics of using
tMap to join multiple data sources.
Open the job
tFileInputDelimited. Go to Row | Main and connect it to
tMap_1. Change the name of the flow to
tMap,and you should see two input tables: customer and order.
customerIdfield from the
customertable and drag it to the
Expr. keyin the