1. I have a simple index defined on var1 in sas data set : one 2. when appending the data to the sas dataset in step1 with the new data set for ex: two the index that is already defined for the dataset one is lost. please see the below code. data class(index=(name/unique)); /* index created on name in the work.class*/ set sashelp.class; run; proc contents data=class; quit; data class1; /* index is not there in the work.class1*/ set class (where= (name = 'Alfred')); run; proc contents data=class1; run; data class; set class class1 ; run; proc contents data=class; /* index is lost in work.class*/ quit; kindly let me if I am doing some thing wrong.
... View more