Question

我得到一个＆＃34;错误：ORA-00928：缺少SELECT关键字＆＃34;运行以下查询时出现错误消息。

查询的目的是获取每个十年中大多数电影中加星标（由星号表示，如ord = 1所示）的演员的名字。

我独立测试了T1和T2并且它们起作用。我不明白我做错了什么。

你能帮我解释一下吗？

注意：这是家庭作业

        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

你不需要在T _i之间使用逗号吗？

Oracle：使用WITH子句时缺少SELECT关键字

1 个答案: