1. MARK CARPENTER, Ph.D. Introduction to SAS Programming and Applications
Thursday, Sep 24, 2015
MARK CARPENTER, Ph.D.
Module 5 : SAS Functions
Description. In this module, we with various SAS Functions, including numerical functions, date functions and character functions.
SAS Keywords : Date, Day, Year, Month, COMPBL, COMPRESS, FIND
New Topics : Character and Date Functions
New PROCs : N/A

2. Returns the current date as a SAS date value. Category: Date and Time
DATE Function
Returns the current date as a SAS date value.
Category: Date and Time
Alias: TODAY
See: TODAY Function
Syntax
DATE()
Introduction to SAS Programming and Applications
DATE/TIME FUNCTIONS: DATE Function
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

3. DATE/TIME FUNCTIONS: DAY Function
Introduction to SAS Programming and Applications
DATE/TIME FUNCTIONS: DAY Function
DAY Function
Returns the day of the month from a SAS date value.
Category: Date and Time
Syntax
Arguments
Details
Examples
See Also
DAY(date)
date
specifies a SAS expression that represents a SAS date value.
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

4. TRUNCATION FUNCTIONS: ROUND Function
Rounds the first argument to the nearest multiple of the second argument, or to the nearest integer when the second argument is omitted.
Category: Truncation
Syntax
Arguments
Details
Basic Concepts
Differences between Binary and Decimal Arithmetic
The Effects of Rounding
Expressing Binary Values
Testing for Approximate Equality
Producing Expected Results
When the Rounding Unit Is the Reciprocal of an Integer
Computing Results in Special Cases
Computing Results When the Value Is Halfway between Multiples of the Rounding Unit
ROUND (argument <,rounding-unit>)
Introduction to SAS Programming and Applications
TRUNCATION FUNCTIONS: ROUND Function
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

5. TRUNCATION FUNCTIONS: FLOOR Function
Introduction to SAS Programming and Applications
TRUNCATION FUNCTIONS: FLOOR Function
FLOOR Function
Returns the largest integer that is less than or equal to the argument, fuzzed to avoid unexpected floating-point results.
Category: Truncation
Syntax
FLOOR (argument)
Arguments
argument
specifies a numeric constant, variable, or expression.
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

6. CHARACTER FUNCTIONS: COMPBL Function
Introduction to SAS Programming and Applications
CHARACTER FUNCTIONS: COMPBL Function
COMPBL Function
Removes multiple blanks from a character string.
Category: Character
Syntax
COMPBL(source)
Arguments
source
specifies a character constant, variable, or expression to compress.
The Basics: The COMPBL function removes multiple blanks in a character string by translating each occurrence of two or more consecutive blanks into a single blank.
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

7. CHARACTER FUNCTIONS: COMPRESS Function
Introduction to SAS Programming and Applications
CHARACTER FUNCTIONS: COMPRESS Function
COMPRESS Function
Returns a character string with specified characters removed from the original string.
Category: Character
Restriction: I18N Level 0
Tip: DBCS equivalent function is KCOMPRESS in SAS National Language Support (NLS): Reference Guide.
Syntax
COMPRESS(<source><, chars><, modifiers>)
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

8. CHARACTER FUNCTIONS: FINDFunction
running head
FIND Function: Searches for a specific substring of characters within a character string.
Category: Character
Syntax
FIND(string,substring<,modifiers><,startpos>)
FIND(string,substring<,startpos><,modifiers>)
Arguments
string
specifies a character constant, variable, or expression that will be searched for substrings
substring
is a character constant, variable, or expression that specifies the substring of characters to search for in string.
modifiers
is a character constant, variable, or expression that specifies one or more modifiers. The following modifiers can be in uppercase or lowercase:
Introduction to SAS Programming and Applications
CHARACTER FUNCTIONS: FINDFunction
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1

9. CHARACTER FUNCTIONS: SUBSTRFunction
SUBSTR (left of =) Function
Replaces character value contents.
Category: Character
Syntax
SUBSTR(variable, position<,length>)=characters-to-replace
Arguments
Variable: specifies a character variable.
Position: specifies a numeric constant, variable, or expression that is the beginning character position.
Length: specifies a numeric constant, variable, or expression that is the length of the substring that will be replaced.
Introduction to SAS Programming and Applications
CHARACTER FUNCTIONS: SUBSTRFunction
Module 5 : SAS Functions
Mark Carpenter, Ph.D.
Slide 3-1