Module datafusion::optimizer

This module contains a query optimizer that operates against a logical plan and applies some simple rules to a logical plan, such as "Projection Push Down" and "Type Coercion".

Modules

optimizer	Query optimizer traits
projection_push_down	Projection Push Down optimizer rule ensures that only referenced columns are loaded into memory
type_coercion	The type_coercion optimizer rule ensures that all binary operators are operating on compatible types by adding explicit cast operations to expressions. For example, the operation c_float + c_int would be rewritten as c_float + CAST(c_int AS float). This keeps the runtime query execution code much simpler.
utils	Collection of utility functions that are leveraged by the query optimizer rules