如何在不使用 WITH 块的情况下过滤 oracle 中只有 rank=1 的记录

How to filter records having only rank=1 in oracle without using WITH block

创建了一个示例 table 并尝试过滤排名为 1 的记录,但失败了

错误

ORA-00933: SQL 命令未正确结束 00933.00000 - “SQL 命令未正确结束” *原因:
*行动: 行错误:30 列:3

CREATE TABLE exam_result (
points int,
last_name varchar(255),
first_name varchar(255) );

INSERT INTO exam_result VALUES (70, 'Emyr', 'Downes');
INSERT INTO exam_result VALUES (70, 'Dina', 'Morin');
INSERT INTO exam_result VALUES (80, 'Evie-May', 'Boyer');
INSERT INTO exam_result VALUES (60, 'Nora', 'Parkinson');
INSERT INTO exam_result VALUES (40, 'Trystan', 'Oconnor');
INSERT INTO exam_result VALUES (90, 'Eryk', 'Myers');

SELECT * FROM
(
  SELECT
  RANK() OVER(ORDER BY points DESC) AS ranking,
  first_name,
  last_name,
  points
  FROM exam_result
) AS a
WHERE ranking <= 1;

您需要从查询中删除 as 关键字。别名 table,AS 是不允许的。 AS 可以指定为列指定别名。

删除 AS 关键字。例如:

SELECT * FROM
(
  SELECT
  RANK() OVER(ORDER BY points DESC) AS ranking,
  first_name,
  last_name,
  points
  FROM exam_result
) a
WHERE ranking <= 1;

请参阅 db<>fiddle 中的 运行 示例。