Module datafusion_optimizer::utils

Collection of utility functions that are leveraged by the query optimizer rules

Functions

add_filter

returns a new LogicalPlan that wraps plan in a LogicalPlan::Filter with its predicate be all predicates ANDed.

optimize_children

Convenience rule for writing optimizers: recursively invoke optimize on plan’s children and then return a node of the same type. Useful for optimizer rules which want to leave the type of plan unchanged but still apply to the children. This also handles the case when the plan is a LogicalPlan::Explain.

split_conjunction

converts “A AND B AND C” => [A, B, C]