Function has_work_table_reference

datafusion/sql/src/cte.rs:187–204

(
    plan: &LogicalPlan,
    work_table_source: &Arc<dyn TableSource>,
)

}

fn has_work_table_reference(
    plan: &LogicalPlan,
    work_table_source: &Arc<dyn TableSource>,
) -> bool {
    let mut has_reference = false;
    plan.apply(|node| {
        if let LogicalPlan::TableScan(scan) = node
            && Arc::ptr_eq(&scan.source, work_table_source)
        {
            has_reference = true;
            return Ok(TreeNodeRecursion::Stop);
        }
        Ok(TreeNodeRecursion::Continue)
    })
    // Closure always return Ok
    .unwrap();
    has_reference
}