July 1999
Intermediate to advanced
502 pages
19h 52m
English
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Name
UPDATE
Synopsis
UPDATEtableSETcolumn=value, ... [WHEREclause]
Alters data within a table. This statement is used to change actual
data within a table without altering the table itself. You may use
the name of a column as a value when setting a new value. For
example, UPDATE health SET miles_ran=miles_ran+5
would add five to the current value of the
miles_ran column. The statement returns the number
of rows changed.
You must have UPDATE privileges to use this
statement.
Example
# Change the name 'John Deo' to 'John Doe' everywhere in the people table. UPDATE people SET name='John Doe' WHERE name='John Deo'
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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.