Function log_plan

datafusion/optimizer/src/utils.rs:106–109

Log the plan in debug/tracing mode after some part of the optimizer runs

(description: &str, plan: &LogicalPlan)

/// Log the plan in debug/tracing mode after some part of the optimizer runs
pub fn log_plan(description: &str, plan: &LogicalPlan) {
    debug!("{description}:\n{}\n", plan.display_indent());
    trace!("{description}::\n{}\n", plan.display_indent_schema());
}

/// Determine whether a predicate can restrict NULLs. e.g.
/// `c0 > 8` return true;