PARTITION BY

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

brand
Software
Teradata Vantage
prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1145-162K

In its column_reference, or comma-separated list of column references, the group, or groups, over which the function operates.

PARTITION BY is optional. If there are no PARTITION BY or RESET WHEN clauses, then the entire result set, delivered by the FROM clause, constitutes a single group, or partition.

PARTITION BY clause is also called the window partition clause.