Hash Object Using Add Method - Need Code Check

[InfoAlisaA]

Hello Everyone,

So I have the following table that I need to create a hash object from:

Continent ID	Continent Name	Location
91	North America	North
93	Europe	North
94	Africa	South
95	Asia	South
96	Australia/Pacific	South

This is my code so far:

data _null_ (keep=Continent_ID Continent_Name Location);

  length Continent_ID 3.;

  length Continent_Name $25;

  length Location $5;

  if _N_=1 then do;

  declare hash L();

  L.definekey('Continent_ID');

  L.definedata('Continent_Name','Location');

  L.definedone();

  L.add(key:96,data:'Australia/Pacific',data:'South');

  L.add(key:95,data:'Asia',data:'South');

  L.add(key:94,data:'Africa',data:'South');

  L.add(key:93,data:'Europe',data:'North');

  L.add(key:91,data:'North America',data:'North');

  call missing(Continent_ID,Continent_Name,Location);

  end;

  L.output(dataset:'continents');

  run;

proc print data=continents;

run;

The problem I am having right now is that I am not getting my Continent_ID to output with the rest of the hash object. I am able to get the Continent_Name and Location to print out, but I am not able to get the key to print out.

Could someone take a look at my code and let me know where I am going wrong?

Thanks,

Alisa

[Haikuo · Accepted solution]

Alisa,

You only output every variable that you have defined as 'data', 'key' plays as an index, will not be part of your output data set if you skip it.

BTW, when doing 'data _null_', none of the data set options will make a difference, as you are NOT outputting anything anyway.

data _null_ /*(keep=Continent_ID Continent_Name Location)*/;

  length Continent_ID 3.;

  length Continent_Name $25;

  length Location $5;

  if _N_=1 then do;

  declare hash L();

  L.definekey('Continent_ID');

  L.definedata('Continent_Id','Continent_Name','Location');

  L.definedone();

  L.add(key:96,data:96,data:'Australia/Pacific',data:'South');

  L.add(key:95,data:95,data:'Asia',data:'South');

  L.add(key:94,data:94,data:'Africa',data:'South');

  L.add(key:93,data:93,data:'Europe',data:'North');

  L.add(key:91,data:91,data:'North America',data:'North');

  call missing(Continent_ID,Continent_Name,Location);

  end;

  L.output(dataset:'continents');

  run;

proc print data=continents;

run;

Haikuo

[InfoAlisaA]

Thank you! This helped a lot!:smileylaugh: