Struct SimpleTableSource 

pub struct SimpleTableSource { /* private fields */ }

A trivial logical table source with a fixed schema.

Implementations

impl SimpleTableSource

pub fn new(schema: SchemaRef) -> Self

pub fn empty() -> Self

Trait Implementations

impl TableSource for SimpleTableSource

fn as_any(&self) -> &dyn Any

fn schema(&self) -> SchemaRef

Get a reference to the schema for this table

fn constraints(&self) -> Option<&Constraints>

Get primary key indices, if any

fn table_type(&self) -> TableType

Get the type of this table for metadata/catalog purposes.

fn supports_filters_pushdown( &self, filters: &[&Expr], ) -> Result<Vec<TableProviderFilterPushDown>, DataFusionError>

Tests whether the table provider can make use of any or all filter expressions to optimize data retrieval. Only non-volatile expressions are passed to this function.

fn get_logical_plan(&self) -> Option<Cow<'_, LogicalPlan>>

Get the Logical plan of this table provider, if available.

fn get_column_default(&self, _column: &str) -> Option<&Expr>

Get the default value for a column, if available.