Oracle數據庫中有多種方法可以檢測重復記錄，以下是一些常用的方法：
SELECT DISTINCT column1, column2
FROM table_name;
SELECT column1, column2, COUNT(*)
FROM table_name
GROUP BY column1, column2
HAVING COUNT(*) > 1;
SELECT *
FROM table_name
WHERE ROWID IN (
SELECT MIN(ROWID)
FROM table_name
GROUP BY column1, column2
HAVING COUNT(*) > 1
);
SELECT *
FROM (
SELECT column1, column2, ROW_NUMBER() OVER (PARTITION BY column1, column2 ORDER BY column1) AS rn
FROM table_name
)
WHERE rn > 1;
這些方法可以幫助您檢測Oracle數據庫中的重復記錄并采取適當的措施處理它們。
