MySQL⽇期列转⾏list_mysql列转⾏以及年⽉分组实例如下所⽰：
SELECT count(_id)) zcount, a.job_dept,
DATE_FORMAT(submit_date, '%Y-%m') zsubmit_date
FROM
劳动最光荣作文表名 a
WHERE
a.statu = 3
口服避孕药的副作用
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
强识SELECT
zsubmit_date,
MAX(CASE WHEN job_dept = '19' THEN zcount ELSE 0 END ) 19zcount,
德国英文怎么写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
(
现在进行时SELECT汽车销售好做吗
count(_id)) zcount, a.job_dept,
承包合同DATE_FORMAT(submit_date, '%Y-%m') zsubmit_date
FROM
马二先生表名 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
