PROC APPEND    

Below is a collection of PROC APPEND SAS® papers.  PROC APPEND is very useful when you need to append two or more datasets of the same structure.  See also PROC SQL.  See alternative PROC DATASETS and SET statement.

PROC DATASETS;

 DELETE A;                           /* Best Practice to first delete dataset A */

RUN;

                                              /* Similar to SET A B in DATA Step */

PROC APPEND BASE = A   /* Generally new dataset name without any content */

                          DATA = B    /* Add dataset B records to the end of dataset A recods */

                          FORCE;       /* Forces the records to join even if variable lengths differ */

RUN;

SAS® Reference PROC APPEND Syntax

1. PROC COPY and PROC APPEND: A Developer’s Secrets, Diane Olson [DATECOPY]

2. The Power of PROC APPEND, Ted Logothetti

3. When PROC APPEND May Make More Sense Than the DATA STEP, David W. Carr

4. Fatal Witlessness: Appending Datasets! WARNING! This may cause truncation of data!, Arunim Gupta