Function create_lex_ordering

datafusion/physical-expr/src/physical_expr.rs:170–193

Creates a vector of [LexOrdering] from a vector of logical expression

(
    schema: &SchemaRef,
    sort_order: &[Vec<SortExpr>],
    execution_props: &ExecutionProps,
)

/// Creates a vector of [LexOrdering] from a vector of logical expression
pub fn create_lex_ordering(
    schema: &SchemaRef,
    sort_order: &[Vec<SortExpr>],
    execution_props: &ExecutionProps,
) -> Result<Vec<LexOrdering>> {
    // Try the fast path that only supports column references first
    // This avoids creating a DFSchema
    if let Ok(ordering) = create_ordering(schema, sort_order) {
        return Ok(ordering);
    }

    let df_schema = DFSchema::try_from(Arc::clone(schema))?;

    let mut all_sort_orders = vec![];

    for exprs in sort_order.iter() {
        all_sort_orders.extend(LexOrdering::new(create_physical_sort_exprs(
            exprs,
            &df_schema,
            execution_props,
        )?));
    }
    Ok(all_sort_orders)
}

/// Create a physical sort expression from a logical expression
pub fn create_physical_sort_expr(