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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')

其中关键在于DATE_FORMAT(submit_date, '%Y-%m')对时间年月进行了分组排序

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 

以上这篇mysql列转行以及年月分组实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

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