- data raw;
- input code 1 date 3-4 int 6;
- datalines;
- 1 1 0
- 1 1
- 1 2
- 1 3
- 1 3 0
- 1 1
- 1 2
- 2 4 0
- 2 1
- 2 2
- 2 3
- 2 45 0
- 2 1
- 2 2
- ;
- data out(drop=temp);
- retain temp;
- set raw;
- if not missing(date) then temp=date;
- else date=temp;
- run;


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