[−][src]Struct datafusion::physical_plan::csv::CsvExec
Execution plan for scanning a CSV file
Implementations
impl CsvExec
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pub fn try_new(
path: &str,
options: CsvReadOptions<'_>,
projection: Option<Vec<usize>>,
batch_size: usize
) -> Result<Self>
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path: &str,
options: CsvReadOptions<'_>,
projection: Option<Vec<usize>>,
batch_size: usize
) -> Result<Self>
Create a new execution plan for reading a set of CSV files
pub fn path(&self) -> &str
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Path to directory containing partitioned CSV files with the same schema
pub fn filenames(&self) -> &[String]
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The individual files under path
pub fn has_header(&self) -> bool
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Does the CSV file have a header?
pub fn delimiter(&self) -> Option<&u8>
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An optional column delimiter. Defaults to b','
pub fn file_extension(&self) -> &str
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File extension
pub fn projection(&self) -> Option<&Vec<usize>>
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Optional projection for which columns to load
pub fn batch_size(&self) -> usize
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Batch size
pub fn try_infer_schema(
filenames: &[String],
options: &CsvReadOptions<'_>
) -> Result<Schema>
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filenames: &[String],
options: &CsvReadOptions<'_>
) -> Result<Schema>
Infer schema for given CSV dataset
Trait Implementations
impl Clone for CsvExec
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impl Debug for CsvExec
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impl ExecutionPlan for CsvExec
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fn as_any(&self) -> &dyn Any
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Return a reference to Any that can be used for downcasting
fn schema(&self) -> SchemaRef
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Get the schema for this execution plan
fn output_partitioning(&self) -> Partitioning
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Get the output partitioning of this plan
fn children(&self) -> Vec<Arc<dyn ExecutionPlan>>
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fn with_new_children(
&self,
children: Vec<Arc<dyn ExecutionPlan>>
) -> Result<Arc<dyn ExecutionPlan>>
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&self,
children: Vec<Arc<dyn ExecutionPlan>>
) -> Result<Arc<dyn ExecutionPlan>>
fn execute<'life0, 'async_trait>(
&'life0 self,
partition: usize
) -> Pin<Box<dyn Future<Output = Result<SendableRecordBatchStream>> + Send + 'async_trait>> where
'life0: 'async_trait,
Self: 'async_trait,
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&'life0 self,
partition: usize
) -> Pin<Box<dyn Future<Output = Result<SendableRecordBatchStream>> + Send + 'async_trait>> where
'life0: 'async_trait,
Self: 'async_trait,
fn required_child_distribution(&self) -> Distribution
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Auto Trait Implementations
impl RefUnwindSafe for CsvExec
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impl Send for CsvExec
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impl Sync for CsvExec
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impl Unpin for CsvExec
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impl UnwindSafe for CsvExec
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Pointable for T
pub const ALIGN: usize
type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize
pub unsafe fn deref<'a>(ptr: usize) -> &'a T
pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
pub unsafe fn drop(ptr: usize)
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,