Struct datafusion::physical_plan::csv::CsvExec [−][src]
pub struct CsvExec { /* fields omitted */ }
Execution plan for scanning a CSV file
Implementations
impl CsvExec
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impl CsvExec
[src]pub fn try_new(
path: &str,
options: CsvReadOptions<'_>,
projection: Option<Vec<usize>>,
batch_size: usize,
limit: Option<usize>
) -> Result<Self>
[src]
path: &str,
options: CsvReadOptions<'_>,
projection: Option<Vec<usize>>,
batch_size: usize,
limit: Option<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 file_schema(&self) -> SchemaRef
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Get the schema of the CSV file
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 limit(&self) -> Option<usize>
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Limit
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 ExecutionPlan for CsvExec
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impl ExecutionPlan for CsvExec
[src]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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fn metrics(&self) -> HashMap<String, SQLMetric>
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Auto Trait Implementations
impl RefUnwindSafe for CsvExec
impl RefUnwindSafe for CsvExec
impl UnwindSafe for CsvExec
impl UnwindSafe for CsvExec