DayNumber_Of_Week | SQL Date/Time Functions & Expressions | Teradata Vantage - 17.10 - DayNumber_Of_Week - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Date and Time Functions and Expressions

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1211-171K
Language
English (United States)

Returns the number of days from the beginning of the week to the specified date.

The DayNumber_Of_Week function provides improved performance compared to using the Sys_Calendar.Calendar system view to obtain similar results.

ANSI Compliance

This statement is a Teradata extension to the ANSI SQL:2011 standard.

Result Type

The result is an INTEGER value between 1 and 7, representing the day of the week, where the first day of the week = 1 and the last day of the week = 7. The first day of the week is defined by the business calendar the session is using. For example, in the ISO calendar, Monday = 1 and in the Teradata business calendar Monday = 2.