In reply to shivu.

This is a JSON array value. By default, the SAS JSON engine will place each of these values in its own column within a table. You can then use PROC TRANSPOSE or a DATA step to restructure the data from "wide" to "long".

filename test temp;
data _null_;
file test;
put '
[ {
"labels":[ "abcd", "Eggs", "Happy" ]
} ]';
run;

libname t json fileref=test;

data want (keep=label);
length label $ 20;
set t.labels;
array val{*} labels:;
do i=1 to dim(val);
label=val[i];
output;
end;
run;