All of those support datasets that don't fit in RAM, or else they would be useless at data warehousing. MemSQL uses rowstores in memory combined with columnsto

All of those support datasets that don't fit in RAM, or else they would be useless at data warehousing. MemSQL uses rowstores in memory combined with columnstores on disk. Both can be joined together seamlessly and the latest release will automatically choose and transition the table type for you as data size and access patterns change.