MySql中按周、月統計數量

經需求要求對某個表進行按每周、每月統計報表顯示，以下為sql

1、按周統計數據:

SELECT
    DATE_FORMAT( CreateDate, '%Y-%u' ) AS WEEK,
    DATE_FORMAT(date_sub( CreateDate, INTERVAL dayofweek( CreateDate )- 2 DAY ),'%Y-%m-%d') AS CreateDate,
    count(*) AS count 
FROM
    gyl_order 
GROUP BY
    WEEK;

查看效果:

日期字段為每周的周一

 

 

2、按月統計數據:

    SELECT
    DATE_FORMAT( CreateDate, '%Y-%m' ) AS Month,
    DATE_FORMAT( CreateDate, '%Y-%m-01' ) AS CreateDate,
    count(*) AS count 
FROM
    gyl_order 
GROUP BY
    Month;
    

 查看效果:

日期字段為每月的1號