DayNumber_Of_Week | SQL Date/Time Functions & Expressions | Teradata Vantage - DayNumber_Of_Week - Analytics Database - Teradata Vantage

SQL Date and Time Functions and Expressions

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-10-30
dita:mapPath
cpk1628111786971.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
pxz1544241488545
lifecycle
latest
Product Category
Teradata Vantage™

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.