CALL SYMDEL Routine
Deletes the specified variable from the macro global
symbol table.
| Type: |
DATA step call routine |
Syntax
CALL SYMDEL(macro-variable<, option> );
Required Arguments
- macro-variable
-
can be any of the following:
-
the name of a macro variable within
quotation marks but without an ampersand. When a macro variable value
contains another macro variable reference, SYMDEL does not attempt
to resolve the reference.
-
the name of a DATA step character
variable, specified with no quotation marks, which contains the name
of a macro variable. If the value is not a valid SAS name, or if the
macro processor cannot find a macro variable of that name, SAS writes
a warning to the log.
-
a character expression that constructs
a macro variable name.
- option(s)
-
- NOWARN
-
suppresses the warning
message when an attempt is made to delete a non-existent macro variable.
NOWARN must be within quotation marks.
Details
CALL SYMDEL issues a
warning when an attempt is made to delete a non-existent macro variable.
To suppress this message, use the NOWARN option.