Struct polars_plan::logical_plan::FileCacher

source · [−]

pub struct FileCacher { /* private fields */ }

Expand description

Aggregate all the columns used in csv scans and make sure that all columns are scanned in one go. Due to self joins there can be multiple Scans of the same file in a LP. We already cache the scans in the PhysicalPlan, but we need to make sure that the first scan has all the columns needed.

Auto Trait Implementations

impl !RefUnwindSafe for FileCacher

impl Send for FileCacher

impl Sync for FileCacher

impl Unpin for FileCacher

impl !UnwindSafe for FileCacher

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