Oracle过滤重复数据的方法有以下几种:
SELECT DISTINCT column1, column2, ...
FROM table_name;
SELECT column1, column2, ...
FROM table_name
GROUP BY column1, column2, ...;
SELECT column1, column2, ...
FROM table_name
WHERE rowid in (
SELECT min(rowid)
FROM table_name
GROUP BY column1, column2, ...
);
SELECT column1, column2, ...
FROM table_name
WHERE (column1, column2, ...) IN (
SELECT column1, column2, ...
FROM table_name
GROUP BY column1, column2, ...
);
以上是几种常见的Oracle过滤重复数据的方法,可以根据具体情况选择适合的方法。
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