Selects DBMS columns for the view descriptor.
|
Required statement
|
| Applies to: |
view descriptor
|
| Interacts with: |
RESET
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SELECT ALL | column-identifier-1
<...column-identifier-n>;
|
The SELECT statement specifies which DBMS columns in the access descriptor
to include in the view descriptor. This is a required statement and is used
only when defining view descriptors.
If you use an editing statement, such as SELECT, it
must follow the CREATE statement when you create a view descriptor. See CREATE for more information
on the order of statements.
The SELECT statement can take one of the following arguments:
-
ALL
-
includes in the view descriptor all the
columns that were defined in the access descriptor excluding dropped columns.
-
column-identifier
-
can be either the DBMS column name or the
positional equivalent from the LIST statement, which is the number that represents
the column's place in the access descriptor on which the view is based. For
example, to select the first three columns, submit the following statement:
select 1 2 3;
If the column name contains special characters or national
characters, enclose the name in quotes. You can select as many columns as
you want in one SELECT statement.
SELECT statements are cumulative within the same view
creation. That is, if you submit the following two SELECT statements, columns
1, 5, and 6 are selected, not just columns 5 and 6:
select 1;
select 5 6;
To clear all your current selections when creating a
view descriptor, use the
RESET ALL statement; you can then
use another SELECT statement to select new columns.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.