topic The query requires remerging summary statistics back with the original data in SAS Programming

The query requires remerging summary statistics back with the original data

paddyb — Tue, 05 Jun 2018 13:23:43 GMT

25         
26         proc sql noprint;
27         	create table armcd1 as
28         	 select distinct a.usubjid,a.arm,a.armcd,a.rfstdtc,a.sex, b.visit as vis1, b.visitnum as vis1num, b.svstdtc as vis1dtc
29         	 from armcd0 a left join
30         	  (select distinct usubjid, visit, visitnum, svstdtc
31         	   from sd.sv where visit='VISIT 1'
32         	   group by usubjid, visit having svstdtc=min(svstdtc)) b
33         	 on a.usubjid=b.usubjid
34         	 order by usubjid;

How to get rid of this note?

Re: The query requires remerging summary statistics back with the original data

Kurt_Bremser — Tue, 05 Jun 2018 13:48:43 GMT

When you use group by and a summary function (like min()), but use variables in the select that are not in the group by and not summarized in some way, you get this note. And you get no reduction of the number of observations.

Re: The query requires remerging summary statistics back with the original data

RW9 — Tue, 05 Jun 2018 13:55:21 GMT

Something like:

proc sql noprint;
  create table armcd1 as
  select distinct a.usubjid,
                  a.arm,
                  a.armcd,
                  a.rfstdtc,
                  a.sex, 
                  b.visit as vis1, 
                  b.visitnum as vis1num, 
                  b.svstdtc as vis1dtc
  from armcd0 a 
  left join (select usubjid, visit, visitnum, svstdtc
             from (select * from sd.sv where visit='VISIT 1')
             group by usubjid, visit, visitnum having svstdtc=min(svstdtc)) b
  on a.usubjid=b.usubjid;
quit;

But its really hard to give any good advice, I have no test data to run against, have to have something to run against.

I would simplify it out to a proc sort, and a datastep merge.

Also, what is the point of grabbing visit and visitnum? They will always be VISIT 1, and 1?

Re: The query requires remerging summary statistics back with the original data

novinosrin — Tue, 05 Jun 2018 14:37:13 GMT

options NONOTES;