data temp; input siren $ class $ imput $; cards; A CP titi B CP toto C CE tata D CE tata F CM toto G CM toto H SU tata I SU toto ; run; The output I want : siren class imput A CP titi C CE tata D CE tata F CM toto G CM toto H SU tata Many thanks in advance ! ... View more

I want to identify any duplicates between rows of different groups and delete some observation. My example : ``` data temp; input siren $ imput $; cards; x one x one x two y two y two z three z three z four ; run; ``` The output I want : ``` siren imput x one x one y two y two z three z three ``` Many thanks in advance ! ... View more