MemSQL v3.1 发布下载 分布式关系型数据库

Unmaterialized views which enable row- and column-level security with online ALTER VIEW.
Automatic cross-datacenter replication via a single REPLICATE DATABASE command. The slave site can be used as a hot backup and for offloading read processing from the main site.
INSERT and LOAD DATA are now transactional in the distributed system. Both commands now also support the IGNORE syntax.
INSERT…SELECT in the distributed system. INSERT…SELECT will automatically push down to the leaves across a foreign shard key or stream through the aggregator otherwise.
The aggregator can now stream GROUP BY queries rather than materializing a hash table. This has major performance and space implications for high cardinality GROUP BY queries.