Use the IN= option to determine if a data set contributes to the BY-Group. Output if the BY-Group is found in all data sets.

---

These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

---

/* Create three sample data sets */

data file1;
  input var name $;
datalines;
100 Anja
200 Bob
400 Chandra
600 Darrin
;

data file2;
  infile datalines dsd truncover;
  input var address $ 13.;
datalines;
100,34 Smith Road
200,67 Burt Ave
300,12 You St
400,45 Younge St
500,79 Wellington
600,23 Done Road
;

data file3;
  input var zip;
datalines;
100 28092
200 27502
300 27539
600 27526
;

/* The IN= variable is a boolean flag that resets when a BY-Group */
/* changes. To output only matches from the MERGE, test for the   */
/* condition that the current BY-Group is found in all data sets. */
/*                                                                */
/* Sample data is already in sorted order by VAR, so no sorting   */
/* is needed.                                                     */

data three;
  merge file1 (in=a) file2 (in=b) file3 (in=c);
  by var;
  if a and b and c;
run;

proc print data=three;
run;

---

These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

Obs    var    name         address        zip

 1     100    Anja      34 Smith Road    28092
 2     200    Bob       67 Burt Ave      27502
 3     600    Darrin    23 Done Road     27526

Use the IN= option to determine if a data set contributes to the BY group. Output if BY group is found in all data sets.

Type:	Sample
Topic:	SAS Reference ==> DATA Step SAS Reference ==> Statements ==> File-handling ==> MERGE Common Programming Tasks ==> Combining Data SAS Reference ==> Statements ==> File-handling ==> MERGE ==> with IN= Common Programming Tasks ==> Selecting Data

Date Modified:	2008-01-28 11:08:08
Date Created:	2004-09-30 14:09:03

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