具有多个表，列，值的SQL查询

Question

我对SQL很新，所以如果我写完全废话，请保持温和。我有一个phpbb数据库，我需要从特定用户获取topic_track中所有主题的post_topic和post_text。我的不成功查询（再次，基本上不了解SQL）如下：

SELECT post_subject, post_text
FROM phpbb_posts
WHERE topic_id=(ALL topic_id from phpbb_topics_track where user_id='165261')

你能帮我解决一下吗？

非常感谢你！

Answer 1

那将是

SELECT post_subject, post_text
FROM phpbb_posts
WHERE topic_id = ANY (select topic_id from phpbb_topics_track where user_id='165261');

或

SELECT post_subject, post_text
FROM phpbb_posts
WHERE topic_id IN (select topic_id from phpbb_topics_track where user_id='165261');