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---

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.

  /**************************************************************/
  /*          S A S   S A M P L E   L I B R A R Y               */
  /*                                                            */
  /*    NAME: BUG10U01                                          */
  /*   TITLE: Grouped or Sorted Observations, Chapter 10        */
  /* PRODUCT: BASE                                              */
  /*  SYSTEM: ALL                                               */
  /*    KEYS: DOC DATASTEP PRINT SORT VAR SET BY FIRST. LAST.   */
  /*          NODUP                                             */
  /*   PROCS: PRINT SORT                                        */
  /*    DATA:                                                   */
  /*                                                            */
  /* SUPPORT:                             UPDATE:               */
  /*     REF: SAS Language and Procedures:  Usage               */
  /*    MISC:                                                   */
  /*                                                            */
  /**************************************************************/

  /* For simplicity the infile statement has been removed and */
  /* the raw data is being read into this step via a cards    */
  /* statement.                                               */

options ls=72;
title;
data type;
   input country $ 1-11 tourtype $ 13-24 nights
         landcost vendor $;
cards;
Spain       architecture  10  510 World
Japan       architecture   8  720 Express
Switzerland scenery        9  734 World
France      architecture   8  575 World
Ireland     scenery        7  558 Express
New Zealand scenery       16 1489 Southsea
Italy       architecture   8  468 Express
Greece      scenery       12  698 Express
;
run;
proc print data=type;
   title 'Data Set TYPE';
run;

proc sort data=type out=type2;
   by tourtype;
run;

proc print data=type2;
   var tourtype country nights landcost vendor;
   title 'The Simplest Sort--One Variable, Default Order of Groups';
run;

proc sort data=type out=type3;
   by tourtype vendor landcost;
run;

proc print data=type3;
   var tourtype vendor landcost country nights;
   title 'Observations Grouped by Type of Tour, Vendor, and Price';
run;

proc sort data=type out=type4;
   by descending tourtype vendor landcost;
run;

proc print data=type4;
   var tourtype vendor landcost country nights;
   title 'Descending and Ascending Orders';
run;

proc sort data=type out=type5;
   by tourtype landcost;
run;

proc print data=type5;
   var tourtype landcost country nights vendor;
   title 'Tours Arranged by TOURTYPE and LANDCOST';
run;

data temp;
   set type5;
   by tourtype;
   frsttour=first.tourtype;
   lasttour=last.tourtype;
run;

proc print data=temp;
   var country tourtype frsttour lasttour;
   title 'Representing FIRST.TOURTYPE and LAST.TOURTYPE';
run;

proc sort data=type out=type5;
   by tourtype landcost;
run;

data lowcost;
   set type5;
   by tourtype;
   if first.tourtype;
run;

proc print data=lowcost;
   title 'Least Expensive Tour for Each Type of Tour';
run;

proc sort data=type out=type6;
   by country;
run;

proc print data=type6;
   title 'Alphabetical Order by Country';
run;

data dupobs;
   input country $ 1-11 tourtype $ 13-24 nights
         landcost vendor $;
   cards;
Spain       architecture  10  510 World
Japan       architecture   8  720 Express
Switzerland scenery        9  734 World
Switzerland scenery        9  734 World
France      architecture   8  575 World
Ireland     scenery        7  558 Express
New Zealand scenery       16 1489 Southsea
Italy       architecture   8  468 Express
Greece      scenery       12  698 Express
;
run;
proc print data=dupobs;
   title 'Data Set DUPOBS';
run;

proc sort data=dupobs out=fixed noduplicates;
   by country;
run;

proc print data=fixed;
   title 'Removing a Duplicate Observation with PROC SORT';
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.

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