Where do &derivation_1 and &name_1 get declared/assigned? Is there a naming convention to the variables? I wonder if a data step would be more efficient if there was a naming convention. For example if the variables are listed in the dd_derivations list that could be queried as well. data table_# set _events_; keep &standard_vars &derivation_1-&derivation_&var_count; rename &derivation_1-&derivation_&var_count=&name1-&&name_&var_count.; run;
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