To use tMSSqlLastInsertId correctly, you must disable "Use Batch Size" in the tMSSqlOutput component that does the insert. Otherwise, the last_insert_id value will always be zero.
NOTE: All kudos for this goes to Carl Bekwam Bekwam Blog: tMSSqlLastInsertId Returns 0. I added here because I didn't see it and felt it was helpful for the community.
Thanks for sharing it on forum.
Watch the recorded webinar!
Accelerate your data lake projects with an agile approach
Create systems and workflow to manage clean data ingestion and data transformation.
Introduction to Talend Open Studio for Data Integration.