A small test
data have;
input ID index_date :mmddyy10. priority;
format index_date mmddyy10.;
cards;
1 2/3/18 0
1 2/3/18 1
1 2/3/18 0
2 3/4/15 0
3 7/14/14 0
3 7/14/14 0
4 10/1/17 1
;
proc sql;
create table want(drop=t) as
select distinct *,count(distinct priority)>1 as t
from have
group by ID , index_date
having t and priority=1 or t=0 ;
quit;
proc print noobs;run;
Your test data is too simple. Just add one more variable, like a row number to see why.
row+1;
ID index_date priority row
1 02/03/2018 1 2
2 03/04/2015 0 4
3 07/14/2014 0 5
3 07/14/2014 0 6
4 10/01/2017 1 7
That's correct. The code assumes no more extra variables.
If there aren't any extra variables then just let the DISTINCT keyword to the work.
proc sql;
create table want as
select distinct *
from have
group by ID , index_date
having priority=max(priority)
order by ID , index_date
;
quit;
Excellent catch. Afternoon drowsiness. Kudos!
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