pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
e,e,e-e,16,,0.40417505700074563,$null
e,z,e-z,16,0.8453039251425987,0.8533354586601858,$blah
e,n,e-n,16,0.8696016832340685,0.23880554416624933,$null