The Teradata Database channel includes discussions around advanced Teradata features such as high-performance parallel database technology, the optimizer, mixed workload management solutions, and other related technologies.
This is not meant to exhaustive but can be used to warm you before upgrading.
We have upgraded to 15.10 recently. We ran into DR 182490 to 15.10.02. It is fixed in 15.10.04 that is GSA on 12/19.
Issue: : If you run the below sql for the current hour (for example currently is 12:31 PM so I put in 12 in the case statements), the case statement in the where clause clearly equates rpt_dt to current_date – 1 if the hour from current time equates to 12 (which it should if the sql is executed between 12:01 PM through 12:59 PM). But in the actual output rpt_dt comes out populated with the value of current_date and not current_date - 1