Function create_context

datafusion-examples/examples/udf/advanced_udwf.rs:220–230

create local execution context with `cars.csv` registered as a table named `cars`

()

// create local execution context with `cars.csv` registered as a table named `cars`
async fn create_context() -> Result<SessionContext> {
    // declare a new context. In spark API, this corresponds to a new spark SQL session
    let ctx = SessionContext::new();

    let dataset = ExampleDataset::Cars;

    ctx.register_csv("cars", dataset.path_str()?, CsvReadOptions::new())
        .await?;

    Ok(ctx)
}

/// In this example we register `SmoothItUdf` as user defined window function
/// and invoke it via the DataFrame API and SQL