SUCCEEDS Example 2 - Teradata VantageCloud Lake

Assume in the employee table, created by the following CREATE TABLE statement, jobdur1 and jobdur2 are derived period columns.

CREATE TABLE employee (
   eid INTEGER NOT NULL, 
   name VARCHAR(100) NOT NULL,
   deptno INTEGER NOT NULL,
   jobst1 DATE NOT NULL,
   jobend1   DATE NOT NULL,
   PERIOD FOR jobdur1(jobst1, jobend1),
   jobst2 DATE NOT NULL,
   jobend2   DATE NOT NULL,
   PERIOD FOR jobdur2(jobst2, jobend2)
   ) PRIMARY INDEX(eid);

EID	Name	Dept No	JobSt1	JobEnd1	JobSt2	JobEnd2
1	Tom	101	DATE'2001-01-01'	DATE'2004-01-01'	DATE'2005-01-01'	DATE'2006-01-01'
2	Rick	201	DATE'2005-01-01'	DATE'2006-01-01'	DATE'2001-01-01'	DATE'2004-01-01'
3	Joo	301	DATE'2005-01-01'	DATE'2006-01-01'	DATE'2006-01-01'	DATE'2007-01-01'
4	Tam	401	DATE'2001-01-01'	DATE'2006-01-01'	DATE'2002-01-01'	DATE'2004-01-01'
5	Pat	501	DATE'2005-01-01'	DATE'2007-01-01'	DATE'2006-01-01'	DATE'2008-01-01'
6	Jack	601	DATE'2005-01-01'	DATE'2007-01-01'	DATE'2007-01-01'	DATE'2008-01-01'
7	Yu	701	DATE'2005-01-01'	DATE'2007-01-01'	DATE'2004-01-01'	DATE'2005-01-01'
8	Tim	801	DATE'2005-01-01'	DATE'2007-01-01'	DATE'2005-01-01'	DATE'2007-01-01'

In the following SQL statement, SUCCEEDS is used with derived period columns of the employee table:

SELECT eid, name, jobst1, jobend1, jobst2, jobend2 
FROM employee 
WHERE jobdur1 SUCCEEDS jobdur2;

The result is:

EID	Name	Dept No	JobSt1	JobEnd1	JobSt2	JobEnd2
2	Rick	201	DATE'2005-01-01'	DATE'2006-01-01'	DATE'2001-01-01'	DATE'2004-01-01'
7	Yu	701	DATE'2005-01-01'	DATE'2007-01-01'	DATE'2004-01-01'	DATE'2005-01-01'