关于sql：MySql选择并计算每天的数据数量

mysqlsql

MySql Select and count number of data per day

我有一个带列的下表：

1	id \| data \| date

如何查询日期范围从1到30天的所有数据并每天统计所有数据？

我试过了，但它几秒钟后也会出现。

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Select count(data) as data
From table
Where date between '2013-12-02 00-00-00' and '2014-01-02 23:59:59'
group by date

我想实现

1 2	day 1 \| day 2 \| day \| day 4 \| . . . 3 \| 4 \| 2 \| 5 \| . . .

相关讨论

尝试以下操作

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SELECT DATE_FORMAT(date, '%Y-%m-%d') AS the_date
, COUNT(*) AS count
FROM table
WHERE date BETWEEN DATE_FORMAT('2014-11-28', '%Y-%m-%d') AND DATE_FORMAT('2014-12-05', '%Y-%m-%d')
GROUP
BY the_date

相关讨论

似乎您需要如下查询：

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SELECT
CASE date_format(date ,"%W")
WHEN 'Monday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Monday' ) ,0) ELSE 0
END AS 'Monday',
CASE date_format(date ,"%W")
WHEN 'Tuesday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Tuesday' ) ,0) ELSE 0
END AS 'Tuesday',
CASE date_format(date ,"%W")
WHEN 'Wednesday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Wednesday' ) ,0) ELSE 0
END AS 'Wednesday',
CASE date_format(date ,"%W")
WHEN 'Thursday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Thursday' ) ,0) ELSE 0
END AS 'Thursday',
CASE date_format(date ,"%W")
WHEN 'Friday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Friday' ) ,0) ELSE 0
END AS 'Friday',
CASE date_format(date ,"%W")
WHEN 'Saturday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Saturday' ) ,0) ELSE 0
END AS 'Saturday',
CASE date_format(date ,"%W")
WHEN 'Sunday' THEN IFNULL((SELECT COUNT(id) FROM YOUR_TABLE WHERE
date_format(date ,"%W") ='Sunday' ) ,0) ELSE 0
END AS 'Sunday'
FROM YOUR_TABLE

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SELECT @count:=0;
SELECT CONCAT('day ',@count+1) as day, COUNT(*), date
FROM date between
'2013-12-02 00-00-00'
AND
'2014-01-02 23:59:59')
GROUP BY date