NTO puts the word TEST at the beginning of the namefor each test email.

To retrieve subscribers who were sent emails with names starting with "TEST," we need to join the _Job and _Sent system data views on the JobID field and filter by the EmailName field using a LIKE condition.

Join Condition: The correct join condition between _Job and _Sent is ON J.JobID = S.JobID. This ensures that we are linking the job and sent data correctly.

EmailName Filter: We use J.EmailName LIKE 'TEST%' to filter for emails whose names start with "TEST".

SELECT * FROM _Job J INNER JOIN _Sent S ON J.JobID = S.JobID WHERE J.EmailName LIKE 'TEST%'

Salesforce Marketing Cloud System Data Views