Query Processor

Adaptive Server 15.0 provides an enhanced query processor

The Adaptive Server version 15.0 query processor is self-tuning, requiring fewer interventions than earlier versions. This version of Adaptive Server has less reliance on worktables for materialization between steps since the engine supports data flow between steps. However, more worktables could be used in cases where Adaptive Server determines that hash and merge operations are effective.

New features include support for:

Partitioning is the basic building block for parallelism.

Adaptive Server release 15.0 provides roundrobin partitioning. Round robin partitionin is equivalent to the 12.5 style of partitioning. During the upgrade to Adaptive Server release 15.0, all existing partitioned tables are unpartitioned and automatically converted to 1-way round robin partitioned tables.