pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
a,d,a-d,78,,,$blah
b,d,b-d,-88,,,$null
c,d,c-d,29,0.30928466220865325,,$blah
g,d,g-d,84,0.051446079972376046,,$null