LIST

LIST

Lists columns in the descriptor and gives information about them.

Optional statement

Applies to: access descriptor or view descriptor

Default: ALL

Syntax
Details

Syntax

LIST <ALL | VIEW | column-identifier-1 <... column-identifier-n>>;

Details

The LIST statement lists columns in the descriptor along with information about the columns. The LIST statement can be used when creating an access descriptor or a view descriptor. The LIST information is written to your SAS log.

If you use an editing statement, such as LIST, it must follow the CREATE statement and the database-description statements when you create a descriptor. See CREATE for more information on the order of statements.

You can specify LIST as many times as you want while creating a descriptor; specify LIST last in your PROC ACCESS code to see the completed descriptor information. Or, if you are creating multiple descriptors, specify LIST before the next CREATE statement to list all the information about the descriptor you are creating.

The LIST statement can take one of the following arguments:

ALL

lists all the DBMS columns in the file, the positional equivalents, the SAS variable names, and the SAS variable formats that are available for the access descriptor. When you are creating an access descriptor, *NON-DISPLAY* appears next to the column description for any column that has been dropped. When you are creating a view descriptor, *SELECTED* appears next to the column description for columns that you have selected for the view.

VIEW

lists all the DBMS columns that are selected for the view descriptor, along with their positional equivalents, their SAS names and formats, any subsetting clauses, and the word *SELECTED* . Any columns that were dropped in the access descriptor are not displayed. The VIEW argument is valid only for a view descriptor.

column-identifier

lists the specified DBMS column name, its positional equivalent, its SAS variable name and format, and whether the column has been selected or dropped. If the column name contains special characters or national characters, enclose the name in quotes.

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 descriptor. For example, to list information about the fifth and eighth columns in the descriptor, submit the following statement:

list 5 8;

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	Optional statement
Applies to:	access descriptor or view descriptor
Default:	ALL