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Configuring the components

The schema defined through tCombinedSQLInput can be different from that of the source table as you can just instantiate the desired columns of the source table. Therefore, tCombinedSQLInput also plays a role of column filtering.

In this scenario, the source database table has seven columns: id, first_name, last_name, city, state, date_of_birth, and salary while tCombinedSQLInput only instantiates four columns that are needed for the aggregation: id, state, date_of_birth, and salary from the source table.

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