The Basics of SAS Functions
Definition
SAS functions are
pre-written routines that perform computations or system manipulations
on arguments and return a value. Functions can return either numeric
or character results. The value that is returned can be used in an
assignment statement or elsewhere in expressions.
Uses of SAS Functions
You can use SAS functions
in DATA step programming statements, in WHERE expressions, in macro
language statements, in the REPORT procedure, and in Structured Query
Language (SQL). They enable you to do the following:
-
calculate sample statistics
-
create SAS date values
-
convert U.S. ZIP codes to state postal codes
-
round values
-
generate random numbers
-
extract a portion of a character value
-
convert data from one data type to another
SAS Functions Categories
SAS functions provide
programming shortcuts. The following table shows you all of the SAS
function categories. This book covers selected functions that convert
data, manipulate SAS date values, and modify values of character variables.
|
Functions by Category
|
|||
|---|---|---|---|
|
Arithmetic
|
Descriptive Statistics*
|
Numeric*
|
State and ZIP code*
|
|
Array
|
Distance
|
Probability
|
Trigonometric
|
|
Bitwise Logical Operations
|
External Files
|
Quantile
|
Truncation*
|
|
CAS
|
External Routines
|
Random Number
|
Variable Control
|
|
Character*
|
Financial
|
SAS File I/O
|
Variable Information
|
|
Character String Matching
|
Hyperbolic
|
Search
|
Web Services
|
|
Combinatorial
|
Macro
|
Sort
|
Web Tools
|
|
Date and Time
|
Mathematical*
|
Special*
|
|
* Denotes the functions
that are covered in this chapter.
Last updated: August 23, 2018
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