WebSep 15, 2016 · SELECT * FROM user_actions WHERE timestamp BETWEEN date_sub (now (), interval 5 minute) AND date_sub (now (), interval 10 minute); The left side contains the moment earlier than now with 5 minutes and the right side contains the moment earlier than now with 10 minutes. So, the right side is actually earlier (smaller) … WebJun 8, 2016 · You can use ajax. create an enum field in users table lets call it (status) '0'=> offline and '1'=> online and make two setInterval functions one to update user status each 2 minutes for example with ajax and another one to get count of users with status '1' from database with ajax too.
WHERE datetime older than some time (eg. 15 minutes)
WebMar 15, 2009 · If your table currently only has 2 fields, you’ll need to add a timestamp field (with default as CURRENT_TIMESTAMP) to be able to tell when the row was added. Then you can run the following MySQL... WebJul 23, 2024 · DATE_SUB (NOW (), INTERVAL 10 MINUTE) 是MySQL的方法,在时间判断中会经常用到。. 1. 应用场景:. 查询10分钟设备是否在线,根据上报时间判断. 2. 原 … owtv.com
mysql - Count amount of online users with PHP - Stack Overflow
WebMar 21, 2013 · DELETE FROM `database`.`table` WHERE ((action="limit") AND (info='login') AND (creation < DATE_SUB(NOW(), INTERVAL 10 MINUTE))) It just so happens that the PRIMARY KEY for the associated rows are literally roommates. It like asking two Olympic Weightlifters to walk through the same door. What makes it worse is … WebJun 11, 2009 · So your query MUST BE next: SELECT * FROM table WHERE last_activity >= DATE_SUB (NOW (), INTERVAL 10 MINUTE) This rule is also applied for the other fields that are the part of the index. – Andrey Bakharev Sep 16, 2014 at 8:33 Add a comment 1 SELECT TIMESTAMPDIFF (MINUTE,LogOutTime,LogInTime) AS … WebHowever, you can use this code to get start_time and end_time based on now (). Change now () as per your requirement. select date_sub (str_to_date (concat (hour (now ()),':',floor (minute (now ())/5)*5),'%H:%i'),interval 5 minute) as start_time, str_to_date (concat (hour (now ()),':',floor (minute (now ())/5)*5),'%H:%i') as end_time, now (); owu agrocasco tuw