Help with FIND_NEXT and merging of multiple records

[jungjein]

How do I lookup the hash table such that if there is a matched record, it will continue to lookup. If there is not matched record then i will just be blank?

/* Create test data */

 

data have_a;

input id name :$40.;

cards;

123456 Detroit

134567 Bordeaux

472831 Lille

;

 

data have_b;

input id name :&$40. parent_id parent_name :&$40.;

cards;

123456  Detroit             123450  Wayne County

123456  Detroit             319484  Bastille

123450  Wayne County        123400  Michigan

123400  Michigan            123000  USA

123000  USA                 120000  North America

120000  North America       100000  Earth

134567  Bordeaux            134560  Gironde

134560  Gironde             134500  Nouvelle-Aquitaine

134500  Nouvelle-Aquitaine  134000  France

134000  France              130000  Europe

130000  Europe              100000  Earth

319484  Bastille                100001  Mars

319484  Bastille                100002  Venus

;

 

/* Perform look-ups */

 

data want;

if _n_=1 then do;

  dcl hash h(dataset: 'have_b', multidata: 'y');

  h.definekey('id');

  h.definedata('parent_id', 'parent_name');

  h.definedone();

  if 0 then set have_b;

end;

array pid    parent_id1-parent_id4;

array pn $40 parent_name1-parent_name4;

set have_a;

call missing(of parent:);

rc=h.find();

p_id=parent_id;

p_name=parent_name;

do i=1 to dim(pn) while(h.find(key: parent_id)=0);

  pid[i]=parent_id;

  pn[i]=parent_name;

end;

parent_id=p_id;

parent_name=p_name;

drop rc i p_:;

run;

[FreelanceReinh]

I think this has been answered now in the original thread.