批量刪除數據庫表中的記錄

Question

我想一次刪除多個記錄。

我有兩個表，一個包含

comments: comment_id, comment, author_id 
news_comments: news_id, comment_id 

我想從news_comments刪除所有記錄，其中AUTHOR_ID在意見表= 1。

我試着這樣做，但它給了我關於子查詢返回的多個項目的錯誤：

delete from news_items where comment_id = 
(select comment_id from comments where author_id = 1) 

Answer 1

delete from news_items where comment_id IN 
(select comment_id from comments where author_id = 1) 
             ^^ 
             IN 

Answer 2

試試這個

delete from news_items where comment_id in 
(select comment_id from comments where author_id = 1)