Function first_select_projection

nodedb-sql/src/aggregate_walk.rs:221–230

(sql: &str)

    use crate::parser::statement::parse_sql;

    fn first_select_projection(sql: &str) -> Vec<ast::SelectItem> {
        let stmts = parse_sql(sql).unwrap();
        match stmts.into_iter().next().unwrap() {
            ast::Statement::Query(q) => match *q.body {
                ast::SetExpr::Select(s) => s.projection,
                _ => panic!(),
            },
            _ => panic!(),
        }
    }

    fn first_expr(sql: &str) -> ast::Expr {
        match first_select_projection(sql).into_iter().next().unwrap() {