Mysql 使用MIN（）函数删除查询

我对此查询有问题：

我想删除用户名和上传时间特定的记录

我的问题是：

我怎样才能做到这一点呢？

像这样改变

DELETE FROM [upload_news] WHERE upload_time=
(SELECT min(upload_time) FROM [upload_news] WHERE 
 [username]='"+username+"')

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@用户3419496现在检查一下，请注意，另一个用户可能同时上传了新闻。

DELETE FROM [upload_news] WHERE upload_time=
(SELECT min(upload_time) FROM [upload_news] WHERE 
 [username]='"+username+"')