April 2008
Intermediate to advanced
566 pages
21h 55m
English
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Name
ACOS()
Synopsis
ACOS(number)This function returns the arc cosine, in radians, of a given number. For input greater than 1 or less than –1, NULL is returned. Here is an example:
SELECT ACOS(.5), ACOS(1.5); +----------+-----------+ | ACOS(.5) | ACOS(1.5) | +----------+-----------+ | 1.047198 | NULL | +----------+-----------+
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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.