哪个表包含帖子URL？

开发
2

在 SQL 中，它是：

'/t/-' || topics.id || '/' || posts.post_number

在您的示例中，这将变为：

SELECT u.email, c.name AS post_category, '/t/-' || t.id || '/' || p.post_number AS post_url
 FROM posts p
LEFT JOIN user_emails u ON p.user_id = u.user_id
LEFT JOIN topics t ON p.topic_id = t.id
LEFT JOIN categories c ON t.category_id = c.id
WHERE p.created_at < '2021-03-01T00:00:00.000Z'
    GROUP BY
       u.email, u.user_id, c.name