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
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