在SQL中，如何防止where条件后重新设置行号？

Question

我有这样一个查询。

SELECT ROW_NUMBER() OVER (ORDER BY total_votes desc, views desc, date desc, time desc) AS rn,
name, date, time, subject, full_address, views, total_votes, user_email, typology_name
FROM photo
ORDER BY total_votes desc, views desc, date desc, time desc;

产生了这样的结果：

.

现在，我想过滤结果表，例如我只看到234行。

SELECT ROW_NUMBER() OVER(ORDER BY total_votes desc, views desc, date desc, time desc) AS row_num,
name, date, time, subject, full_address, views, total_votes, user_email, typology_name
FROM(
SELECT *, ROW_NUMBER() OVER (ORDER BY total_votes desc, views desc, date desc, time desc) AS rn
FROM photo) q
WHERE rn >= 2 AND rn <= 4 
ORDER BY total_votes desc, views desc, date desc, time desc;

问题是这个查询返回了这3行，但把123作为行号而不是234。

我可以怎么做才能看到我在第一个查询中看到的行号？先谢谢你。

Answer 1

你是在外层查询上执行行数的第二种计算，而不是内部查询。所以它返回的是过滤查询中的行数。你应该使用这段代码。

SELECT rn, name, date, time, subject, full_address, views, total_votes, user_email, typology_name
FROM(
SELECT *, 
ROW_NUMBER() OVER (ORDER BY total_votes desc, views desc, date desc, time desc) AS rn
FROM photo) q
WHERE rn >= 2 AND rn <= 4 
ORDER BY total_votes desc, views desc, date desc, time desc;