Module planner 

Converts logical plans into physical execution trees.

The optimizer produces a logical plan (what data you want), but the planner converts it to a physical plan (how to actually get it). This means choosing hash joins vs nested loops, picking index scans vs full scans, etc.

Structs

PhysicalPlan

A physical plan ready for execution.

Planner

Converts a logical plan to a physical operator tree.

Functions

convert_aggregate_function

Converts a logical aggregate function to a physical aggregate function.

convert_binary_op

Converts a logical binary operator to a filter binary operator.

convert_filter_expression

Converts a logical expression to a filter expression.

convert_unary_op

Converts a logical unary operator to a filter unary operator.