March 2001
Intermediate to advanced
640 pages
14h 9m
English
book
Sams Teach Yourself Transact-SQL in 21 Days, Second Edition
by Lowell Mauer, David Solomon, Bennett McEwan
Content preview from Sams Teach Yourself Transact-SQL in 21 Days, Second Edition
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Updating Rows
Updating information in a database row is done in much the same way that you would retrieve data using the SELECT statement. The UPDATE statement is used to actually modify data in a table. The syntax of the update statement is
UPDATE <tablename> | <viewname> | <alias>
SET <column> = <New value>[,
<column> = <New value>…]
[FROM <table list>]
[WHERE <Boolean constraint>]
There are three basic sections to the UPDATE statement:
The table that the UPDATE is modifying.
The list of columns that will be updated and their respective new values.
Optionally, you can specify multiple tables if joining tables together to limit the number of rows being updated.
The following example searches the entire customer_demo table looking for a row that ...
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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.