Function scalar_subquery

datafusion/expr/src/expr_fn.rs:305–312

Create a scalar subquery expression

(subquery: Arc<LogicalPlan>)

/// Create a scalar subquery expression
pub fn scalar_subquery(subquery: Arc<LogicalPlan>) -> Expr {
    let outer_ref_columns = subquery.all_out_ref_exprs();
    Expr::ScalarSubquery(Subquery {
        subquery,
        outer_ref_columns,
        spans: Spans::new(),
    })
}

/// Create a grouping set
pub fn grouping_set(exprs: Vec<Vec<Expr>>) -> Expr {