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谁能给我一些例子来进行查询，其中有多个 WHERE 语句？

我有以下查询，我想添加 WHERE privacy = 'public'

$query = $this->db->query("SELECT DATE_FORMAT(eventDate,'%d') AS 
day,eventContent,eventTitle,id FROM eventcal WHERE eventDate BETWEEN 
'$current_year/$current_month/01' AND '$current_year/$current_month
/$total_days_of_current_month'");

提前致谢。

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4 回答 4

3

[..] WHERE privacy = 'public' AND (eventDate BETWEEN [..] )?

于 2010-01-18T15:15:51.173 回答
2

利用：

AND privacy = 'public'
于 2010-01-18T15:15:15.820 回答
2

我对 MySql 一无所知，但看起来你只需要另一个 AND 语句：

$query = $this->db->query("SELECT DATE_FORMAT(eventDate,'%d') AS day,eventContent,eventTitle,id FROM eventcal WHERE
eventDate BETWEEN '$current_year/$current_month/01'
AND '$current_year/ $current_month/$total_days_of_current_month'
AND privacy='public' ");

于 2010-01-18T15:19:05.827 回答
1

将 WHERE 更改为 AND：

AND privacy = 'public'

完整，并且更具可读性：

SELECT DATE_FORMAT(eventDate,'%d') AS day,
       eventContent,
       eventTitle,
       id
FROM   eventcal
WHERE  eventDate BETWEEN '$current_year/$current_month/01'
                     AND '$current_year/$current_month/$total_days_of_current_month'
AND    privacy = 'public'
于 2010-01-18T15:15:25.510 回答