6-5 查询播放厅实现

加上注释

Page参数一定要在前面

XML内
因为我们是单库，所以可以用关联表的形式查询出cinemaName

SELECT
(SELECT cinema_name from mooc_cinema_t c WHERE c.`UUID` = fie.cinema_id) as cinemaName,
fie.hall_name AS hallName,
(SELECT film_name from mooc_film_t f where f.`UUID`=fie.film_id) AS filmName,
(SELECT show_name FROM mooc_hall_dict_t d where d.`UUID`=fie.hall_id) AS hallTypeName,
fie.begin_time AS beginTime,
fie.end_time AS endTime,
fie.price AS filmPrice
FROM mooc_field_t fie

 

加一个参数的接收

然后正常的话XML内就要用where标签来做判断。

Mybatis Plus给我们提供了一个相对比较好用的功能。下节再讲