LeetCode（数据库）- 上月播放的儿童适宜电影

题目链接：​​点击打开链接​​

题目大意：略。

解题思路：学习下解决方案(2)中的 YEAR 函数和 MONTH 函数。

AC 代码

-- 解决方案(1)
SELECT DISTINCT title
FROM TVProgram tv JOIN Content c ON tv.content_id = c.content_id AND content_type = 'Movies' AND Kids_content = 'Y' AND DATE_FORMAT(program_date, '%Y-%m') = '2020-06'

-- 解决方案(2)
SELECT
  DISTINCT c.title
FROM
  TVProgram AS t
  INNER JOIN Content AS c
    ON t.content_id = c. content_id
WHERE
  YEAR(t.program_date) = 2020 
  AND MONTH(t.program_date) = 6
  AND c.content_type = 'Movies'
  AND c.Kids_content = 'Y';