In this scenario, a flow generated by tFixedFlowInput is combined with a flow from the Mysql database. The source
flow contains id and age fields while the Mysql
table contains id and name. We want to retrieve
the age data of the source flow and combine it with the id and name records from the Mysql table based on
id matching. One thing that is worth noting is that the input schema
is different from the output one at tMysqlRow in the
Job.