如何使用MySql从数据库中的两个表中获取数据

Question

我想要做的是从一个表中获取用户名和数字与表中相同的所有信息，然后在同一个调用中，我想从另一个表中加入两行，标题与第一个名为“title”的表格行（希望我说得够清楚）。

试过这个：

`SELECT * FROM movies_in_theater 
     WHERE username = "${req.username}" 
     AND theater_number = '${req.theater}'
     LEFT JOIN movie_info.key_exp, movie_info.key_exp_time 
     WHERE movies_in_theater.movie_title = movie_info.title
     `

Answer 1

像这样：

SELECT t.username
     , t.theater_number
     , t.movie_title
     , i.key_exp
     , i.key_exp_time

  FROM movies_in_theater t

  LEFT
  JOIN movie_info i
    ON i.title = t.movie_title

 WHERE t.username       = ?
   AND t.theater_number = ?