pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
c,d,c-d,29,0.30928466220865325,,$blah
f,d,f-d,60,,0.4408231901628116,$blah
a,d,a-d,78,,,$blah
g,d,g-d,84,0.051446079972376046,,$null