Question

我有一个MySQL数据库，并在我们公司的本地网络应用程序中使用PHP。我正在尝试制作一个几乎完成的小型统计页面。但我想添加另一个字段，显示星期一到星期日这几天输入的数据量。

我尝试了很多，但都没有。

字段：ID，call_time

例如：

1

SELECT count(*) from tbl_event WHERE w(call_time) = 0

2

$TestDay = '2017-01-01'; //For Sunday
SELECT count(*) from tbl_event where call_time = ".$TestDay." 
or (DAYNAME(call_time) = DAYNAME(".$TestDay."))

Answer 1

如果我理解你的问题：

SELECT COUNT(*), DAYOFWEEK(call_time) AS dayname
FROM tbl_event
WHERE call_time > '2017-01-01'
GROUP BY DAYOFWEEK(call_time)

这将创建一个5或7天的列表以及表格中的出现次数。（仅限于当年，2017年）

您可以添加一行AND DAYOFWEEK(call_time) = 5来限制某一天

Answer 2

这将按一系列日期之间的正确顺序提供每周每日事件的摘要计数：

SELECT 
    dayname(`call_time`) as `Day Of Week`,
    dayofweek(`call_time`) as `DayOrder`,
    count(*) as `num_events`
FROM `tbl_event`
WHERE `call_time` BETWEEN '2017-01-01' AND '2017-01-30'
group by dayname(`call_time`)
order by dayofweek(`call_time`)

Answer 3

@Ivo P. 谢谢你的答案，它与小触摸（

for ($varDay = 1; $varDay <= 7; $varDay++) {
    $Test = "SELECT COUNT(*), DAYOFWEEK(call_time) AS dayname FROM tbl_event WHERE DAYOFWEEK(call_time) = ".$varDay." GROUP BY DAYOFWEEK(call_time)";
}

所选日期（周一，周二，周三等）的数据

3 个答案: