title 'Test for AGGREGATE procedure'.

data list /x y 1-2.
begin data.
13
27
30
12
26
11
10
28
29
14
15
end data.
sort cases by x.
list.
aggregate outfile='aggregate.save'/missing=columnwise /document /presorted/break=x(a) /z'label for z'=sum(y)/foo=nu.
list.