Struct datafusion::datasource::memory::MemTable

pub struct MemTable { /* fields omitted */ }

In-memory table

Methods

impl MemTable

pub fn new(schema: Arc<Schema>, batches: Vec<RecordBatch>) -> Result<Self>

Create a new in-memory table from the provided schema and record batches

pub fn load(t: &dyn TableProvider) -> Result<Self>

Create a mem table by reading from another data source

Trait Implementations

impl TableProvider for MemTable

fn schema(&self) -> &Arc<Schema>

Get a reference to the schema for this table

fn scan(
    &self,
    projection: &Option<Vec<usize>>,
    _batch_size: usize
) -> Result<Vec<ScanResult>>

Perform a scan of a table and return a sequence of iterators over the data (one iterator per partition)