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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.

/* Create sample data sets */

data veggies(index=(item));
  input Item $ Inventory ;
datalines;
Corn 12 
Lettuce 6 
Potato 15 
Onion 7 
;


data new_inventory;
  input Item $ Quantity;
datalines;
Lettuce 2
Onion 7
Lettuce 3
;

/* There is no automatic update of like named variables with KEY=.   */
/*                                                                   */
/* To overwrite the values of INVENTORY in the master data set with  */
/* all matches in the look-up data set, use an assignment statement. */ 

data veggies;
  set new_inventory;
  modify veggies key=Item/unique;
  select (_iorc_);                                   
    when (%sysrc(_sok)) do;
      inventory=quantity;
      replace;
      end;
    when (%sysrc(_dsenom)) do;                                          
      _ERROR_=0;
      inventory=.;
      put "Item not in stock --- " Item; 
      end;
    otherwise do;                                          
      put 'Unexpected ERROR: _iorc_= ' _iorc_;  
      stop;                                    
      end; 
  end; 
run;

proc print data=veggies;
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    Item       Inventory

 1     Corn           12
 2     Lettuce         3
 3     Potato         15
 4     Onion           7

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