Oracle：使用 WITH 子句时缺少 SELECT 关键字

Question

我在运行以下查询时收到“错误：ORA-00928：缺少 SELECT 关键字”错误消息。

查询的目的是获取每十年在最多电影中出演（已加星，由 ord=1 表示）的演员的姓名。

我独立测试了 T1 和 T2 并且它们有效。我看不出我做错了什么。

你能给我解释一下吗？

注意：这是作业

        WITH T1 AS
                (SELECT decade, MAX(countTitle) maxCount
                FROM (
                    SELECT FLOOR(yr/10)*10 decade, name, COUNT(title) countTitle
                    FROM movie JOIN casting ON (movie.id = casting.movieid)
                        JOIN actor ON (actor.id = casting.actorid)
                    WHERE  (casting.ord = 1)
                    GROUP BY FLOOR(yr/10)*10, name
                )
                GROUP BY decade)
            T2 AS
                (SELECT decade, MAX(countTitle) maxCount
                FROM T1)
            T3 AS
                (SELECT FLOOR(yr/10)*10 decade, name, COUNT(title) countTitle
                FROM movie JOIN casting ON (movie.id = casting.movieid)
                    JOIN actor ON (actor.id = casting.actorid)
                WHERE  (casting.ord = 1)
                GROUP BY FLOOR(yr/10)*10, name
                )
        SELECT T3.decade, T3.name, T3.countTitle
        FROM T2 INNER JOIN T3
        ON T3.decade = T2.decade AND T3.countTitle = T2.maxCount;

Answer 1

T_is 之间不需要逗号吗？