Hi,
I want to delete the values with dates and just keep the last one. For example, I've a field like var1 below and the result should look like New_var1.
var1 | New_var1 |
a1.sas7bdat | a3.sas7bdat |
a2.sas7bdat | ac_bat.sas7bdat |
a3.sas7bdat | ac_det.sas7bdat |
ac_bat.sas7bdat | acc_20101023.sas7bdat |
ac_det.sas7bdat | acc_fm.sas7bdat |
acc_20101023.sas7bdat | act_re.sas7bdat |
acc_fm.sas7bdat | adds_comp.sas7bdat |
act_re.sas7bdat | adds_comp_w.sas7bdat |
adds_comp.sas7bdat | a_excl.sas7bdat |
adds_comp_w.sas7bdat | x_200911.sas7bdat |
a_excl.sas7bdat | y_201004.sas7bdat |
x_200909.sas7bdat | |
x_200910.sas7bdat | |
x_200911.sas7bdat | |
y_200804.sas7bdat | |
y_200806.sas7bdat | |
y_200810.sas7bdat | |
y_200901.sas7bdat | |
y_200902.sas7bdat | |
y_200903.sas7bdat | |
y_200905.sas7bdat | |
y_200907.sas7bdat | |
y_200908.sas7bdat | |
y_200911.sas7bdat | |
y_200912.sas7bdat | |
y_201001.sas7bdat | |
y_201002.sas7bdat | |
y_201004.sas7bdat |
I think it is LAST DOT "name-part" sorted BY "name-part" "numeric-part". Maybe.
Or maybe in SQL:
proc sql;
create table want as
select var1 as new_var1 from
(select
var1,
compress(scan(var1,1,"."),,"d") as prefix,
input(compress(scan(var1,1,"."),,"kd"), ? best.) as number
from have)
group by prefix
having number=max(number);
quit;
PG
Hi There
Please try the following codes. This should work. However if you have something like aa1 aa2 or abc1 abc2 then you have to add some mode lines to the code. a similar pattern should work.
data want;
set have;
var1=var;
run;
data want;
set want;
var1=tranwrd(var1,'.sas7bdat','');
if index(var1,'.sas7bda') then delete;
run;
proc sort data=want out=want1;
by descending var1;
run;
data want1;
set want1;
j=index(var1,"_");
k= substr(var1,j+1);
l = index(k,"_");
m = substr(k,l+1);
q1 = substr(var1,1,j-1);
q2 = substr(k,1,l-1);
q3 = substr(k,l+1) ;
run;
data want1;
set want1;
var2=k*1;
if j=0 then do;
k=substr(var1,2);
var2=k*1;
q1=substr(var1,1,1);
end;
run;
data want2;
set want1;
q4=q1;
if var2=. then do;
q4=compbl(q1||'_'||q3);
end;
run;
proc sort data=want2;
by q4;
run;
data want3;
set want2;
by q4;
if first.q4 ;
run;
proc sort data=want3 out= want_final(keep=var);
by var;
run;
Is this a case where linguistic sorting might help?
Recently introduced, proc sort sortseq=linguistic( )
And something about number sorting to ensure xxx10 comes after xxx9
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