The Definitive Guide to Data Quality
Or you can use tFileList --> IterateToFlow --> tMap (to parse file numbers) --> tAggregateRow (to find the max) --> tSetGlobalVar and then use the global variable in your file name.
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Introduction to Talend Open Studio for Data Integration.
Practical steps to developing your data integration strategy.
Create systems and workflow to manage clean data ingestion and data transformation.