tpch-dbgen/reference/cmd_update_sf30000

../dbgen -s 30000 -U 1 -S 1 -i 100 -d 100 -f -b ../dists.dss
./trim_updates.sh 1 100
../dbgen -s 30000 -U 75 -S 75 -i 100 -d 100 -f -b ../dists.dss
./trim_updates.sh 75 100
../dbgen -s 30000 -U 150 -S 150 -i 100 -d 100 -f -b ../dists.dss
./trim_updates.sh 150 100