Function scan_empty_with_partitions

datafusion/core/src/test_util/mod.rs:78–88

Scan an empty data source with configured partition, mainly used in tests.

(
    name: Option<&str>,
    table_schema: &Schema,
    projection: Option<Vec<usize>>,
    partitions: usize,
)

/// Scan an empty data source with configured partition, mainly used in tests.
pub fn scan_empty_with_partitions(
    name: Option<&str>,
    table_schema: &Schema,
    projection: Option<Vec<usize>>,
    partitions: usize,
) -> Result<LogicalPlanBuilder> {
    let table_schema = Arc::new(table_schema.clone());
    let provider = Arc::new(EmptyTable::new(table_schema).with_partitions(partitions));
    let name = TableReference::bare(name.unwrap_or(UNNAMED_TABLE));
    LogicalPlanBuilder::scan(name, provider_as_source(provider), projection)
}

/// Get the schema for the aggregate_test_* csv files
pub fn aggr_test_schema() -> SchemaRef {