Mysql 按日期将行分组为 4 个季节 + 年

Question

目前我将新闻分组为月+年，但我们没有足够的新闻文章。因此，我想按季节对它们进行分组:夏季、 Spring 、秋季或冬季 + 年份

所以代替:

• 2013 年 1 月
• 2013 年 3 月
• 2013 年 4 月

它会是:

• 2013 年夏季
• 2013 年 Spring

每月归档

SELECT MONTHNAME(news_date) AS MONTH,
       YEAR(news_date) AS YEAR,
       COUNT(news_id) AS COUNT
FROM news
WHERE news_type = 'NEWS'
  AND news_status = 'ENABLED'
GROUP BY CONCAT(MONTH(news_date), ' ', YEAR(news_date))
ORDER BY news_date DESC

Answer 1

SELECT CASE WHEN MONTH(news_date) IN (12, 1, 2) THEN 'Winter'
            WHEN MONTH(news_date) IN (3, 4, 5) THEN 'Spring'
            WHEN MONTH(news_date) IN (6, 7, 8) THEN 'Summer'
       ELSE 'Fall' END AS Season,
       YEAR(news_date) AS YEAR,
       COUNT(news_id) AS COUNT
FROM news
WHERE news_type = 'NEWS'
  AND news_status = 'ENABLED'
GROUP BY YEAR(news_date), Season
ORDER BY news_date DESC