Teradata 20.00.28.81 / BTEQ 20.00.00.11 / BTET, 24 October 2026. Zero-row column/syntax check and synthetic arithmetic only. No log rows returned, no DBQL rules changed. HASHAMP()+1 is a map/topology assumption, not proof of how many AMPs participated in a request. Check the relevant map and participating AMP count before interpreting a factor. Synthetic positive-total factors were both 2; zero total produced NULL.
