%let cust = %str(cust_id phone_num)

[Geo-]

May anyone know what this line mean and give me a exact case on how it use.

I think cust_id and phone_num are two column names.

%let cust = %str(cust_id phone_num);

 ------------------------------------update---------------------------------------

Actually,I wanted to know STR statement usage and for this specific case which I could not find too much information in the doc..

[Vince_SAS]

The %LET statement creates a global macro variable with a value of the literal text within the parentheses.  To display the value in the SAS log, submit this code:

%put &CUST;

SAS® 9.4 Macro Language: Reference, Fifth Edition
%LET Statement
https://go.documentation.sas.com/?docsetId=mcrolref&docsetTarget=p18wszyqagt1qcn1t6vo5piib1bq.htm&do...

SAS® 9.4 Macro Language: Reference, Fifth Edition
https://go.documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=mcrolref&docsetTarget=...

Vince DelGobbo

SAS R&D

[Geo-]

have edited the message.maybe I am not clearly enough at first.thank you for your time

[novinosrin]

If you want to learn about macro quoting , assuming you are sound in other facets of the language, SAS docs alone will help. Otherwise, please get this book

https://www.sas.com/store/books/categories/usage-and-reference/carpenter-s-complete-guide-to-the-sas...

[Vince_SAS]

The topic of macro quoting is too complicated to explain in a forum post.

You have been recommended a good book.  See also this documentation:

SAS® 9.4 Macro Language: Reference, Fifth Edition
https://go.documentation.sas.com/?docsetId=mcrolref&docsetTarget=p07u5itr1teq0dn1bx0lli1ri5dy.htm&do...

Vince DelGobbo
SAS R&D