Select the top three observations from the top of each BY-Group.

---

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.

/*********************************************************************************/
/* The following data set contains contribution amounts for each value of GROUP. */
/* In order to subset the top three observations within each BY-Group with the   */
/* three largest contribution amounts, sort the data set by the GROUP            */
/* variable and descending AMOUNT.  In the DATA step use the BY statement        */
/* following the SET statement to create the automatic FIRST. and LAST.          */
/* BY-Group variables.  Create a new COUNT variable and set its value to zero    */
/* on the first observation of each group. Increment the COUNT variable by       */
/* adding the value of one for each observation by using the SUM statement.      */
/* Output the observations where the COUNT value equals a 1, 2, or 3.            */
/*********************************************************************************/

data groups;
  input group $ amount date date9.;
  format date date9. amount dollar6.;
datalines;
A 1000 06Mar2000
A 550 01Mar2000
A 375 15Mar2000
A 1500 01Jun2000
A 900 15Jul2000
A 800 30Jun2000
B 500 01Mar2000
B 400 15Mar2000
B 1050 01Jun2000
B 330 15Jul2000
B 575 30Jun2000
;

proc sort;
  by group descending amount;
run;

data top3(drop=count);
  set groups;
  by group descending amount;
  if first.group then count=0;
  count+1;
  if count le 3 then output;
run;

proc print;
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    	  GROUP           AMOUNT             DATE

 1           A             $1,500          01JUN2000
 2           A             $1,000          06MAR2000
 3           A               $900          15JUL2000
 4           B             $1,050          01JUN2000
 5           B               $575          30JUN2000
 6           B               $500          01MAR2000

Operating System and Release Information