MemSQL partitions data across nodes by hash, not by range, so partition prunning is less applicable. However, in a case when it can be applied MemSQL does apply it. [1]

Within each node, for column store tables in MemSQL we do use segment elimination very aggressively, which is effectively the same thing as partition pruning. [2] [3]

[1] http://docs.memsql.com/latest/concepts/distributed_sql/#inde...

[2] http://docs.memsql.com/latest/concepts/columnar/#query-effic...

[3] http://docs.memsql.com/latest/concepts/columnar/#maintenance...