Transpose Multiple Variables to Columns Suffixed with Dates - sas

Question

I have data that looks like this:
data have;
format date monyy.;
input date:date9. group$ value1 value2;
datalines;
01JAN2020 A 100 10
01FEB2020 A 200 20
01JAN2020 B 300 30
01FEB2020 B 400 40
;
run;
But I need it to look like this, where value1 value2 are suffixed with date. This format is being used to export to Excel.
data want;
input group$ value1_JAN20 value1_FEB20 value2_JAN20 value2_FEB20;
datalines;
A 100 200 10 20
B 300 400 30 40
;
run;
I have tried PROC TRANSPOSE, but the actual values of value1 value2 are stored as date names with the names of value1 value2 stored in the column _NAME_.
Is there a way to do this with PROC TRANSPOSE, or is this only a data step/macro solution?
proc transpose data = have
out = try
delim = '_'n
name = date;
by group;
id date;
var value1 value2;
run;

Answer 1

Transpose twice. First to get a truly vertical structure. Then to generate the structure you want.
data have;
input date :date9. group $ value1 value2;
format date monyy.;
datalines;
01JAN2020 A 100 10
01FEB2020 A 200 20
01JAN2020 B 300 30
01FEB2020 B 400 40
;
proc transpose data=have out=tall;
by group date ;
var value1-value2;
run;
proc transpose data=tall out=want(drop=_name_) delim=_;
by group;
id _name_ date ;
var col1 ;
run;
Results:
value1_ value2_ value1_ value2_
Obs group JAN20 JAN20 FEB20 FEB20
1 A 100 10 200 20
2 B 300 30 400 40