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ASSIGN |
Optional statement | |
Applies to: | access descriptor |
Interacts with: | CONTENT, FORMAT, INFORMAT, KEY, MVF, RENAME, RESET |
Default: | NO |
Syntax | |
Details |
Syntax |
ASSIGN<=>YES | NO | Y | N; |
Details |
An editing statement, such as ASSIGN, must be specified after the CREATE and database-description statements when you create an access descriptor. See CREATE for more information.
The value
NO
(or
N
)
enables you to modify SAS variable names, formats, informats, database contents,
occurrence ranges, and BY keys when you create an access descriptor and when
you create view descriptors that are based on this access descriptor.
Specify a
YES
(or
Y
)
value for this statement to generate unique SAS variable names from the first
eight characters of the DBMS column names, according to the rules listed below.
With
YES
, you can change the SAS variable names and other
column information only in the access descriptor. The SAS variable names
and other column information that are saved in an access descriptor are always used when view descriptors are created from the access descriptor;
you cannot change them in the view descriptors.
Default SAS variable names are generated according to these rules:
clientsname
and
clientsnumber
become the
SAS names
clientsn
and
clients1
.
If the same descriptor has another set of columns with
duplicate names, the numeric suffix begins at the next highest number from
the previous set of duplicate names. For example, if the descriptor has the
duplicate names above and also has the DBMS names
customername
,
customernumber
, and
customernode
, the default SAS names would be
customer
,
custome1
, and
custome2
.
func$
becomes the SAS variable name
func_
.
If you specify
YES
for this statement,
the SAS System automatically resolves any duplicate variable names. However,
if you specify
YES
, you cannot specify the CONTENT, FORMAT, INFORMAT,
KEY, MVF (with OCCURS option), RENAME, or RESET statements when you create
view descriptors that are based on the access descriptor.
When the SAS/ACCESS interface encounters the next CREATE
statement to create an access descriptor, the ASSIGN statement is reset to
the default
NO
value.
AN is the alias for the ASSIGN statement.
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Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.