pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
a,m,a-m,91,0.5845859902235405,,$blah
b,m,b-m,37,0.2131543122670404,0.8808641736864395,$blah
c,m,c-m,40,0.44591361207670044,0.7517767865005115,$blah
d,m,d-m,90,,0.19154097301054474,$blah
e,m,e-m,50,,0.44654739304319446,$blah
f,m,f-m,6,0.8336930832963215,,$blah
g,m,g-m,-99,,,$null
h,m,h-m,-59,,0.8730019200593472,$blah