pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
c,z,c-z,-58,0.9637347441012087,0.11453287137889767,$null
a,z,a-z,-38,,0.09432579649188222,$blah
g,z,g-z,15,0.10350187727039162,0.08432913202456382,$null
b,z,b-z,-93,,,$null