Module optimizer 

Query optimizer.

Transforms logical plans for better performance.

Optimization Rules

• Filter Pushdown: Pushes filters closer to scans to reduce data early
• Predicate Simplification: Simplifies constant expressions
• Join Reordering: Optimizes join order using DPccp algorithm

Submodules

• cost - Cost model for estimating operator costs
• cardinality - Cardinality estimation for query operators
• join_order - DPccp join ordering algorithm

Re-exports

pub use cardinality::CardinalityEstimator;

pub use cardinality::ColumnStats;

pub use cardinality::TableStats;

pub use cost::Cost;

pub use cost::CostModel;

pub use join_order::BitSet;

pub use join_order::DPccp;

pub use join_order::JoinGraph;

pub use join_order::JoinGraphBuilder;

pub use join_order::JoinPlan;

Modules

cardinality

Cardinality estimation for query optimization.

cost

Cost model for query optimization.

join_order

DPccp (Dynamic Programming with connected complement pairs) join ordering.

Structs

Optimizer

Query optimizer that transforms logical plans for better performance.