Posted By

bbrumm on 02/21/17

Tagged

sql
Oracle

Versions (?)

Last Edited at 02/21/17 01:19pm

Statistics

Viewed 696 times

Favorited by 0 user(s)

Related snippets

Oracle LAG Function

/ Published in: SQL

A few examples of the LAG function.

Expand | Embed | Plain Text

Copy this code and paste it in your HTML

SELECT * FROM student;
 
--Example 1
SELECT student_id, first_name, last_name, fees_required,
LAG(fees_required) OVER (ORDER BY fees_required ASC) AS prev_fees_required
FROM student
ORDER BY student_id ASC;
 
--Example 2
SELECT student_id, first_name, last_name, fees_required,
LAG(fees_required) OVER (ORDER BY fees_required ASC) AS prev_fees_required
FROM student
ORDER BY fees_required ASC;
 
--Example 3
SELECT student_id, first_name, last_name, fees_required,
LAG(fees_required, 3, 0) OVER (ORDER BY fees_required ASC) AS prev_fees_required
FROM student
ORDER BY fees_required ASC;