Try this one please
data data1;
input company2008 $ value1;
datalines;
A 100
D 98
E 103
;
data data2;
input company2006 $ value2;
datalines;
B 99
C 102
F 110
G 89
;
proc sql;
create table match as select *, abs(value1-value2) as value
from data1, data2;
proc sort data=match; by value;
data match; set match;by value;
retain value;
if first.id then value=1; else value+1;
if value in (1,2);
drop value;
run;
quit;


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