Hello, I've two datasets, Lets say A and B, there are 215 Variables in each of the dataset and datasize is 90 G. I want to append B dataset into A but not to append the duplicate values which are common based on "Three Variables, not based on all 215 variable". I can't use (syncadd=no uniquesave=yes) and also can't use below code, as it will check all variables for duplicity. proc sql feedback; create table lib_w.want select * from lib_A.dsA union corresponding select * from lib_B.dsB ; quit; I'm thininking to creat new varialbe as catx(all three variable) in both A and B and then "A.catx_var ne B.Catx_Var" is there is other way around ? Please help, Thanks in Advance.
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