在Oracle中處理重復數據的SQL技巧有以下幾種方法：
SELECT DISTINCT column1, column2 FROM table_name;
WITH cte AS (
SELECT column1, column2, ROW_NUMBER() OVER (PARTITION BY column1, column2 ORDER BY column1) AS rn
FROM table_name
)
SELECT column1, column2
FROM cte
WHERE rn = 1;
SELECT column1, column2
FROM table_name
GROUP BY column1, column2;
SELECT column1, column2
FROM table_name1
INTERSECT
SELECT column1, column2
FROM table_name2;
以上是一些常見的在Oracle中處理重復數據的SQL技巧，具體的方法可以根據實際情況選擇合適的方式來處理重復數據。
