Function spec

nodedb-query/src/window/value_eval.rs:474–488

(
        func: &str,
        args: Vec<SqlExpr>,
        partition_by: Vec<SqlExpr>,
        order_by: Vec<(SqlExpr, bool)>,
    )

    }

    fn spec(
        func: &str,
        args: Vec<SqlExpr>,
        partition_by: Vec<SqlExpr>,
        order_by: Vec<(SqlExpr, bool)>,
    ) -> WindowFuncSpec {
        WindowFuncSpec {
            alias: format!("w_{func}"),
            func_name: func.to_string(),
            args,
            partition_by,
            order_by,
            frame: WindowFrame::default(),
        }
    }

    fn col(name: &str) -> SqlExpr {
        SqlExpr::Column(name.to_string())