Hi All,
I have the following data based on distance between the cities.
Source | Destination | Distance |
USA | UK | 1000 |
USA | Spain | 200 |
UK | USA | 1000 |
Germany | Spain | 500 |
Spain | USA | 200 |
I want to remove the duplicates where source and destination are same. For Example USA to UK will be same as UK to USA and hence the duplicate value needs to be removed.
Following is the desired output.
Source | Destination | Distance |
USA | UK | 1000 |
USA | Spain | 200 |
Germany | Spain | 500 |
data have;
infile cards expandtabs;
input Source $ Destination $ Distance;
cards;
USA UK 1000
USA Spain 200
UK USA 1000
Germany Spain 500
Spain USA 200
;
run;
data temp;
set have;
call sortc(Source,Destination);
run;
proc sort data=temp out=want nodupkey;
by Source Destination;
run;
proc print;run;
concatenate source and destination in alphabetical order and then pick max distance for each pair.
data have;
infile cards expandtabs;
input Source $ Destination $ Distance;
cards;
USA UK 1000
USA Spain 200
UK USA 1000
Germany Spain 500
Spain USA 200
;
run;
data temp;
set have;
call sortc(Source,Destination);
run;
proc sort data=temp out=want nodupkey;
by Source Destination;
run;
proc print;run;
Thanks for your response. This really solved my query.
Why not just take those where Source < Destination?
If there is only one obs, and Source > Destination?
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