pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
g,c,g-c,50,0.5616833815697281,0.35359807963376766,$blah
e,c,e-c,49,,0.4700103949603517,$null
f,c,f-c,55,,0.6777644586233594,$null
h,c,h-c,-84,0.32969075511772883,0.7237336550024618,$null
b,c,b-c,-54,,0.8613491047618306,$null