private static SqlVarbinary expectedChecksum(Type type, Block block) {
long result = 0;
for (int i = 0; i < block.getPositionCount(); i++) {
if (block.isNull(i)) {
result += PRIME64;
} else {
result += type.hash(block, i) * PRIME64;
}
}
return new SqlVarbinary(wrappedLongArray(result).getBytes());
}
