December 2014
Intermediate to advanced
858 pages
40h 10m
English
Content preview from SAS Certification Prep Guide, 4th 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,
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Reducing Data Storage Space for Numeric Variables
Another
way to reduce data storage space is to reduce the length of numeric
variables. In addition to conserving data storage space, reduced-length
numeric variables use less I/O, both when data is written and when
it is read. For a file that is read frequently, this savings can be
significant. However, in order to safely reduce the length of numeric
variables, you need to understand how SAS stores numeric data.
How SAS Stores Numeric Variables
To store numbers of large magnitude and to perform computations that require many digits of precision to the right of the decimal point, SAS stores all numeric values using double-precision floating-point representation. SAS numeric variables have a maximum ...
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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.
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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.