要刪除Oracle數據庫中的重復記錄,可以使用以下方法之一:
DELETE FROM table_name
WHERE ROWID NOT IN
(SELECT MIN(ROWID) FROM table_name
GROUP BY column1, column2, ...);
DELETE FROM
(SELECT column1, column2, ..., ROW_NUMBER() OVER (PARTITION BY column1, column2, ... ORDER BY column1) AS rn
FROM table_name)
WHERE rn > 1;
請注意,在上述示例中,table_name代表表名,column1、column2等代表確定重復記錄的列。在使用這些方法之前,請務必備份數據以防意外發生。