DataStage Range Lookup Failure – What Gives?

This article details a common issue in IBM DataStage where range lookups fail when trying to supplement fact records with slowly changing dimension data. The author describes a scenario involving funding transactions and student majors, where a range lookup on transaction dates kept aborting. The solution involved adding a sort stage with appropriate sort keys on the reference link before performing the lookup. The article provides step-by-step troubleshooting, including screenshots of the job design and lookup stage setup, making it a practical guide for data pipeline developers facing similar lookup failures in ETL processes.