| Functions and CALL Routines |
Replaces character value contents.
| Category: |
Character
|
| Restriction: |
I18N Level 0
|
| Tip: |
DBCS equivalent functions are KSUBSTR and
KSUBSTRB in
SAS National Language Support (NLS): Reference Guide.
|
|
SUBSTR(variable,
position<,length>)=characters-to-replace
|
-
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.
| Restriction: |
length cannot be larger than the length of the expression that remains
in variable after position. |
| Tip: |
If you omit length, SAS uses all of the characters on the right side of
the assignment statement to replace the values of
variable. |
-
characters-to-replace
-
specifies a character constant, variable,
or expression that will replace the contents of variable.
| Tip: |
Enclose a literal string
of characters in quotation marks. |
If you use an undeclared variable, it
will be assigned a default length of 8 when the SUBSTR function is compiled.
When you use the SUBSTR function on the left side of
an assignment statement, SAS replaces the value of variable with the expression on the right side. SUBSTR replaces length characters starting
at the character that you specify
in position.
|
SAS Statements |
Results |
a='KIDNAP';
substr(a,1,3)='CAT';
put a;
|
CATNAP
|
b=a;
substr(b,4)='TY';
put b;
|
CATTY
|
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
