In the below code I have created sequence number using first and last name in the sashelp.class I have distinct name so we get every record with 1 value in seq variable. Same i need in retain concept without using first and last.name.
data a; set sashelp.class; run; data a1; set a; by name; if first.name then seq=1; else seq+1; run;
Are you after the same results as you did, meaning all 1s
data a;
set sashelp.class;
run;
data a1;
set a;
retain seq 1;
if lag(name) eq name then seq+1;
run;
Are you after the same results as you did, meaning all 1s
data a;
set sashelp.class;
run;
data a1;
set a;
retain seq 1;
if lag(name) eq name then seq+1;
run;
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