November 2004
Intermediate to advanced
576 pages
11h 49m
English
book
DB2® SQL PL: Essential Guide for DB2® UDB on Linux™, UNIX®, Windows®, i5/OS™, and z/OS®, Second Edition
by Zamil Janmohamed, Clara Liu, Drew Bradstock, Raul Chong, Michael Gao, Fraser McArthur, Paul Yip
Content preview from DB2® SQL PL: Essential Guide for DB2® UDB on Linux™, UNIX®, Windows®, i5/OS™, and z/OS®, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 5. Understanding and Using Cursors and Result Sets
In this chapter, you will learn
What a cursor is
How to use cursors inside SQL procedures
How to perform positioned deletes and positioned updates
How cursors affect locking
About cursor behavior on commit and rollback
How to use nested save points
How cursors are used to return result sets to applications.
In previous chapters, you have seen how SQL procedures can manipulate table data by directly executing INSERT, UPDATE, and DELETE statements. Using SQL in this manner, however, means that operations must be applied to the entire set of data defined by the WHERE clause of the statement. In SQL procedures, it is possible to define a set of data rows (which will be called a result set from here ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.