如何用mysql查询连接两个表？

Question

This is a pretty individual question. So I had a hard time finding a good answer on Stack. I'm looking to run a query that combines the information on two tables together.

So far this is what I got

$query = "SELECT blog_post.*, user.name, user.last_name, user.picture 
          FROM blog_post, user 
          INNER JOIN user ON blog_post.author_id = user.id 
          WHERE blog_post.author_id = ? 
          ORDER BY timestamp DESC LIMIT 10";

$Statement = $this->Database->prepare($query);
$Statement->execute(array($id));
$row = $Statement->fetchAll();

print_r($row); //Returns: Array( )

I need to display the user information along with the blog post. I could store the information when I save the post in the database but then it wouldn't update if the user updated their information. So I am trying to retrieve the user information from the user table at the same time as I retrieve the blog post.

How would I go about doing this with one sql query? I know I could easily do it by just calling another query.

Answer 1

Remove , user . It should be written this way:

SELECT blog_post.*, user.name, user.last_name, user.picture 
FROM blog_post
INNER JOIN user ON blog_post.author_id = user.id 
WHERE blog_post.author_id = ? 
ORDER BY timestamp DESC 
LIMIT 10