| ACCESS Procedure Reference |
Drops a column so that it cannot be selected in a view descriptor.
| Optional statement |
|
| Applies to: |
access descriptor
|
| Interacts with: |
RESET, SELECT
|
|
DROP column-identifier-1
<...column-identifier-n>;
|
The DROP statement drops the specified column from an access
descriptor. The column therefore cannot be selected by a view descriptor
that is based on the access descriptor. However, the specified column in the
DBMS table remains unaffected by this statement.
An editing statement, such as DROP, must follow the
CREATE and database-description statements when you create an access descriptor.
See CREATE Statement for
more information about the order of statements.
The column-identifier argument
can be either the column name or the positional equivalent from the LIST statement,
which is the number that represents the column's place in the access descriptor.
For example, to drop the third and fifth columns, submit the following statement:
drop 3 5;
If the column name contains special characters or national
characters, enclose the name in quotation marks. You can drop as many columns
as you want in one DROP statement.
To display a column that was previously dropped, specify
that column name in the RESET statement. However, doing so also resets all
the column's attributes (such as SAS variable name, format, and so on) to
their default values.
Copyright © 2007 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
