17.00 - 17.05 - Example: Returning the Interval Value of a Derived Period - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Date and Time Functions and Expressions

Product
Advanced SQL Engine
Teradata Database
Release Number
17.00
17.05
Release Date
June 2020
Content Type
Programming Reference
Publication ID
B035-1211-170K
Language
English (United States)

INTERVAL returns the interval value of a derived period called jobduration created using the following SQL statement:

CREATE TABLE employee(id INTEGER,
                      name VARCHAR(50),
                      jdbegin DATE NOT NULL FORMAT 'YYYY-MM-DD',
                      jdend   DATE NOT NULL FORMAT 'YYYY-MM-DD',
                      PERIOD FOR jobduration(jdbegin,jdend)
  )PRIMARY INDEX(id);

When the following values are inserted into the employee table:

INSERT INTO employee(1025,'John',DATE'2011-01-02',DATE'2012-05-02');

the following SQL statement:

SELECT INTERVAL(jobduration)MONTH(4) FROM employee;

returns:

    INTERVAL(jobduration) MONTH
  -----------------------------
                             16