Struct datafusion::exec::CsvRelation

pub struct CsvRelation { /* fields omitted */ }

Represents a csv file with a known schema

Methods

impl<'a> CsvRelation

fn open(file: File, schema: TupleType) -> Result<Self, ExecutionError>

Trait Implementations

impl Debug for CsvRelation

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl SimpleRelation for CsvRelation

fn scan<'a>(
    &'a self,
    _ctx: &'a ExecutionContext
) -> Box<Iterator<Item = Result<Tuple, ExecutionError>> + 'a>

scan all records in this relation

fn schema<'a>(&'a self) -> &'a TupleType

get the schema for this relation