Mysql 计算列和内部联接另一个表时出错

我想数一数评论最多的新闻。我有两个表：comments和news，它们包含相同的列：news\u ID

select *,count(News_ID) as count from comments inner join news where comments.News_ID = news.News_ID group by comments.News_ID order by count DESC limit 4

我得到这个错误

#1052 - Column 'News_ID' in field list is ambiguous

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这是否意味着我要数一数的专栏？

确保你说出你选择的专栏中的

news\u id

<代码>评论。新闻id，或

新闻。新闻id

select 
    *,
    count(comments.News_ID) as count 
from comments 
inner join news where comments.News_ID = news.News_ID 
group by comments.News_ID 
order by count DESC limit 4

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您需要告诉在select中使用其列的表的名称有两个

News\u ID

列，因此在查询选择哪个表的列时，要考虑其不明确性，还需要为join with on子句使用正确的语法

select n.*,c.*,count(n.News_ID) as count 
from comments c
inner join news n ON(c.News_ID = n.News_ID)
 group by c.News_ID 
order by count DESC limit 4

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当然我以前做过lol。如果有多个列从不同的表中调用相同的东西，则必须指定要拉出的列：）