SAS/ACCESS Interface to CA-DATACOM/DB: Reference

Appending Data with the APPEND Procedure

In releases of the SAS System earlier than Version 6, the APPEND procedure operated only on SAS data files. You can now append data described by SAS/ACCESS view descriptors and PROC SQL views to SAS data files and vice versa. You can also append data described by view descriptors to each other.

The input file and base file do not have to match column for column. If they do not match, use the FORCE option in the APPEND procedure. This will include all columns in the base file. Values for columns that are not shared by the base and input files are set to missing.

In the following example, two personnel managers have kept separate employee records. One manager has kept records in the CA-DATACOM/DB table EMPLOYEES, described by the view descriptor VLIB.DCMEMPS. The other manager has kept records in a Version 6 SAS data file, MYDATA.SASEMPS. Due to a corporate reorganization, the two sources of data must be combined so that all employee data are stored in the CA-DATACOM/DB table EMPLOYEES. The APPEND procedure can perform this task.

The data described by the view descriptor VLIB.DCMEMPS and the data in the SAS data file MYDATA.SASEMPS are printed with the following statements and displayed in Data Described by VLIB.DCMEMPS and Data in MYDATA.SASEMPS.

proc print data=vlib.dcmemps;
   title 'Data Described by VLIB.DCMEMPS';
run;

proc print data=mydata.sasemps;
   format birthdat date7.;
   title 'Data in MYDATA.SASEMPS Data File';
run;

Data Described by VLIB.DCMEMPS

Data Described by VLIB.DCMEMPS 1 OBS EMPID BIRTHDAT LASTNAME FIRSTNAM MIDDLENA 1 119012 05JAN46 WOLF-PROVENZA G. ANDREA 2 120591 12FEB46 HAMMERSTEIN S. RACHAEL 3 123456 . VARGAS PAUL JESUS 4 127845 25DEC43 MEDER VLADIMIR JORAN 5 129540 31JUL60 CHOULAI CLARA JANE 6 135673 21MAR61 HEMESLY STEPHANIE J. 7 212916 29MAY28 WACHBERGER MARIE-LOUISE TERESA 8 216382 24JUL63 PURINTON PRUDENCE VALENTINE 9 234967 21DEC67 SMITH GILBERT IRVINE 10 237642 13MAR54 BATTERSBY R. STEPHEN 11 239185 28AUG59 DOS REMEDIOS LEONARD WESLEY 12 254896 06APR49 TAYLOR-HUNYADI ITO MISHIMA 13 321783 03JUN35 GONZALES GUILLERMO RICARDO 14 328140 02JUN51 MEDINA-SIDONIA MARGARET ROSE 15 346917 15MAR50 SHIEKELESLAM SHALA Y. 16 356134 25OCT60 DUNNETT CHRISTINE MARIE 17 423286 31OCT64 MIFUNE YUKIO TOSHIRO 18 456910 24SEP53 ARDIS RICHARD BINGHAM 19 456921 12MAY62 KRAUSE KARL-HEINZ G. 20 457232 15OCT63 LOVELL WILLIAM SINCLAIR 21 459287 15JAN34 RODRIGUES JUAN M. 22 677890 24APR65 NISHIMATSU-LYNCH CAROL ANNE

Data in MYDATA.SASEMPS

Data in MYDATA.SASEMPS Data File 1 OBS EMPID BIRTHDAT LASTNAME FIRSTNAM MIDDLENA 1 245962 30AUG64 BEDORTHA KATHY MARTHA 2 765432 01MAR59 POWELL FRANK X. 3 219223 13JUN47 HANSINGER BENJAMIN HAROLD 4 326745 21FEB52 RAWN BEATRICE MAY

Submitting the following statements with the APPEND procedure combines data from these two sources:

proc append base=vlib.dcmemps data=mydata.sasemps;
run;

proc print data=vlib.dcmemps;
   title 'Appended Data';
run;

Appended Data displays the appended data described by the view descriptor VLIB.DCMEMPS. Notice that the data were inserted in the order of Native Key values.

Appended Data

Appended Data 1 OBS EMPID BIRTHDAT LASTNAME FIRSTNAM MIDDLENA 1 119012 05JAN46 WOLF-PROVENZA G. ANDREA 2 120591 12FEB46 HAMMERSTEIN S. RACHAEL 3 123456 . VARGAS PAUL JESUS 4 127845 25DEC43 MEDER VLADIMIR JORAN 5 129540 31JUL60 CHOULAI CLARA JANE 6 135673 21MAR61 HEMESLY STEPHANIE J. 7 212916 29MAY28 WACHBERGER MARIE-LOUISE TERESA 8 216382 24JUL63 PURINTON PRUDENCE VALENTINE 9 219223 13JUN47 HANSINGER BENJAMIN HAROLD 10 234967 21DEC67 SMITH GILBERT IRVINE 11 237642 13MAR54 BATTERSBY R. STEPHEN 12 239185 28AUG59 DOS REMEDIOS LEONARD WESLEY 13 245962 30AUG64 BEDORTHA KATHY MARTHA 14 254896 06APR49 TAYLOR-HUNYADI ITO MISHIMA 15 321783 03JUN35 GONZALES GUILLERMO RICARDO 16 326745 21FEB52 RAWN BEATRICE MAY 17 328140 02JUN51 MEDINA-SIDONIA MARGARET ROSE 18 346917 15MAR50 SHIEKELESLAM SHALA Y. 19 356134 25OCT60 DUNNETT CHRISTINE MARIE 20 423286 31OCT64 MIFUNE YUKIO TOSHIRO 21 456910 24SEP53 ARDIS RICHARD BINGHAM 22 456921 12MAY62 KRAUSE KARL-HEINZ G. 23 457232 15OCT63 LOVELL WILLIAM SINCLAIR 24 459287 05JAN34 RODRIGUES JUAN M. 25 677890 24APR65 NISHIMATSU-LYNCH CAROL ANNE 26 765432 01MAR59 POWELL FRANK X.

The APPEND procedure also accepts a WHERE= data set option or a WHERE statement to retrieve a subset of data. In the following example, a subset of observations from the DATA= data set is added to the BASE= data set. The results are displayed in Appended Data with a WHERE= Data Set Option.

proc append base=vlib.dcmemps data=mydata.sasemps
   (where=(lastname like 'B%' or lastname like 'H%'));
run;

proc print data=vlib.dcmemps;
   title 'Appended Data';
run;

Appended Data with a WHERE= Data Set Option displays the data when the observations appended to the BASE= data set are subset by the WHERE= data set option. In this case, the WHERE= data set option specified that only the employees with last names beginning with B or H should be added to the BASE= data set.

Appended Data with a WHERE= Data Set Option

Appended Data 1 OBS EMPID BIRTHDAT LASTNAME FIRSTNAM MIDDLENA 1 119012 05JAN46 WOLF-PROVENZA G. ANDREA 2 120591 12FEB46 HAMMERSTEIN S. RACHAEL 3 123456 . VARGAS PAUL JESUS 4 127845 25DEC43 MEDER VLADIMIR JORAN 5 129540 31JUL60 CHOULAI CLARA JANE 6 135673 21MAR61 HEMESLY STEPHANIE J. 7 212916 29MAY28 WACHBERGER MARIE-LOUISE TERESA 8 216382 24JUL63 PURINTON PRUDENCE VALENTINE 9 219223 13JUN46 HANSINGER BENJAMIN HAROLD 10 234967 21DEC67 SMITH GILBERT IRVINE 11 237642 13MAR54 BATTERSBY R. STEPHEN 12 239185 28AUG59 DOS REMEDIOS LEONARD WESLEY 13 245962 30AUG64 BEDORTHA KATHY MARTHA 14 254896 06APR49 TAYLOR-HUNYADI ITO MISHIMA 15 321783 03JUN35 GONZALES GUILLERMO RICARDO 16 328140 02JUN51 MEDINA-SIDONIA MARGARET ROSE 17 346917 15MAR50 SHIEKELESLAM SHALA Y. 18 356134 25OCT60 DUNNETT CHRISTINE MARIE 19 423286 31OCT64 MIFUNE YUKIO TOSHIRO 20 456910 24SEP53 ARDIS RICHARD BINGHAM 21 456921 12MAY62 KRAUSE KARL-HEINZ G. 22 457232 15OCT63 LOVELL WILLIAM SINCLAIR 23 459287 05JAN34 RODRIGUES JUAN M. 24 677890 24APR65 NISHIMATSU-LYNCH CAROL ANNE

For more information on the APPEND procedure, see the SAS Procedures Guide.

You can append data described by a view descriptor to a Version 8 data file just as you do with a Version 6 data file. However, when the FORCE option is used to append columns whose names do not match, any column names longer than 8 characters will truncated at 8 characters.

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