Find out the data that is higher than 20 after deduction and delete it?


online

time() online 20

clipboard.png

clipboard.png

id 2"s online_status deduction time () has been higher than 30, but id 1 does not have it, but it is still found out?

Mysqli php7 php sql-statement mysql
Mar.30,2021 
 

  DELETE FROM your_table WHERE online < NOW ()-20;  

For more precise deletion, add  where  condition 
 later.

Previous: Vue splice deletes elements from an array

Next: Javaweb development optimization

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e47ce3-66603.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e47ce3-66603.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?