database: Fix data_value comparison operator
database: Fix data_value comparison operator

Tomek says:

  "Some types may yield different byte-representations for equal
   values."

Fix that up.

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@cloudius-systems.com>

glommer/scylla,victorbriz/scylla,shaunstanislaus/scylla,tempbottle/scylla,kjniemi/scylla,bowlofstew/scylla,tempbottle/scylla,stamhe/scylla,aruanruan/scylla,scylladb/scylla,wildinto/scylla,raphaelsc/scylla,rentongzhang/scylla,duarten/scylla,linearregression/scylla,linearregression/scylla,acbellini/scylla,asias/scylla,stamhe/scylla,justintung/scylla,phonkee/scylla,dwdm/scylla,linearregression/scylla,duarten/scylla,scylladb/scylla,kangkot/scylla,guiquanz/scylla,kjniemi/scylla,guiquanz/scylla,scylladb/scylla,shaunstanislaus/scylla,justintung/scylla,rluta/scylla,bowlofstew/scylla,rentongzhang/scylla,aruanruan/scylla,capturePointer/scylla,asias/scylla,aruanruan/scylla,gwicke/scylla,phonkee/scylla,asias/scylla,guiquanz/scylla,raphaelsc/scylla,rluta/scylla,dwdm/scylla,eklitzke/scylla,eklitzke/scylla,wildinto/scylla,rluta/scylla,phonkee/scylla,eklitzke/scylla,kangkot/scylla,duarten/scylla,scylladb/scylla,glommer/scylla,bowlofstew/scylla,kjniemi/scylla,stamhe/scylla,senseb/scylla,raphaelsc/scylla,dwdm/scylla,kangkot/scylla,respu/scylla,victorbriz/scylla,senseb/scylla,avikivity/scylla,gwicke/scylla,shaunstanislaus/scylla,glommer/scylla,avikivity/scylla,capturePointer/scylla,tempbottle/scylla,victorbriz/scylla,justintung/scylla,wildinto/scylla,capturePointer/scylla,respu/scylla,respu/scylla,senseb/scylla,acbellini/scylla,acbellini/scylla,avikivity/scylla,rentongzhang/scylla,gwicke/scylla