pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
b,z,b-z,-93,,,$null
g,z,g-z,15,0.10350187727039162,0.08432913202456382,$null
a,z,a-z,-38,,0.09432579649188222,$blah
c,z,c-z,-58,0.9637347441012087,0.11453287137889767,$null
f,z,f-z,10,0.4515549159652815,0.3987301842569533,$null
e,z,e-z,16,0.8453039251425987,0.8533354586601858,$blah
d,z,d-z,-31,,0.8894228892924536,$blah