如下所示：
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
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VeVb武林網。
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