Example: Calculating the Difference in Days Between DATE Values - 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
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lifecycle
latest
Product Category
Teradata Vantage™

The following query calculates the difference in days between the two DATE values.

SELECT (DATE '2007-05-10' - DATE '2007-04-28') DAY;

The result is the following:

(2007-05-10 - 2007-04-28) DAY
-----------------------------
12

The following query calculates the difference in months between the two DATE values.

SELECT (DATE '2007-05-10' - DATE '2007-04-28') MONTH;

The result is the following:

(2007-05-10 - 2007-04-28) MONTH
-------------------------------
1

There is a difference of 12 days between the two dates, which does not constitute one month. However, Vantage ignores the day values during the calculation and only considers the month values, so the result is an interval of one month indicating the difference between April and May.