《MYSQL數據庫mysql列轉行以及年月分組實例》要點：
本文介紹了MYSQL數據庫mysql列轉行以及年月分組實例，希望對您有用。如果有疑問，可以聯系我們。
如下所示：MYSQL實例
SELECT count(DISTINCT(a.rect_id)) zcount, a.job_dept,?
DATE_FORMAT(submit_date, '%Y-%m') zsubmit_date?
FROM?
表名 a?
WHERE?
a.statu = 3?
AND a.rstatu = 2?
AND a.job_dept IN ('19', '20', '21')?
GROUP BY?
a.job_dept,?
DATE_FORMAT(submit_date, '%Y-%m')
其中關鍵在于DATE_FORMAT(submit_date, '%Y-%m')對時間年月進行了分組排序MYSQL實例
SELECT
zsubmit_date,
MAX(CASE WHEN job_dept = '19' THEN zcount ELSE 0 END ) 19zcount,
MAX(CASE WHEN job_dept = '20' THEN zcount ELSE 0 END ) 20zcount,
MAX(CASE WHEN job_dept = '21' THEN zcount ELSE 0 END ) 21zcount
FROM
(
SELECT
count(DISTINCT(a.rect_id)) zcount, a.job_dept,
DATE_FORMAT(submit_date, '%Y-%m') zsubmit_date
FROM
表名 a
WHERE
a.statu = 3
AND a.rstatu = 2
AND a.job_dept IN ('19', '20', '21')
GROUP BY
a.job_dept,
DATE_FORMAT(submit_date, '%Y-%m')
) q GROUP BY
zsubmit_date
以上這篇mysql列轉行以及年月分組實例就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持維易PHP.MYSQL實例
轉載請注明本頁網址：
http://www.snjht.com/jiaocheng/3847.html
