Question

我需要一些关于行数的帮助。我设法今天添加和总成员数（行）。我想算上这周和本月。任何人都可以指出我该怎么做？感谢。

$result = mysql_query("SELECT * FROM members");
$num_rows = mysql_num_rows($result);

echo "$num_rows Members\n";

$utoday = date("j. n. Y");

$today = mysql_query("SELECT * FROM mambers WHERE date='$utoday' ");
$num_today = mysql_num_rows($today);

echo "$num_today Members\n";

Answer 1

如果您将日期存储为类型日期，则可以使用mysql built-in time functions。

例如，您可以按月（日期）分组。

Answer 2

如果你想从最近一个星期一开始计算本周：

SELECT COUNT(1) WeekCount
FROM members A,
(
   SELECT
       (MondayDate + INTERVAL 0 SECOND) PastMonday,
       ((MondayDate + INTERVAL 7 DAY) + INTERVAL 0 SECOND) NextMonday
   FROM 
       (SELECT DATE(NOW() - INTERVAL WEEKDAY(NOW()) DAY) MondayDate) AA
) B
WHERE date >= PastMonday AND date < NextMonday
;

如果您想从第一个查询开始计算本月：

SELECT COUNT(1) MonthCount
FROM members A,
(
    SELECT FirstOfThisMonth,
    ((FirstOfThisMonth + INTERVAL 32 DAY) - INTERVAL (DAY(FirstOfThisMonth + INTERVAL 32 DAY)-1) DAY) FirstOfNextMonth
    FROM
    (
        SELECT (DATE(NOW() - INTERVAL (DAY(NOW())-1) DAY) + INTERVAL 0 SECOND) FirstOfThisMonth
    ) AA
) B
WHERE date >= FirstOfThisMonth AND date < FirstOfNextMonth
;

试一试!!!

帮助计算行数

2 个答案: