创建触发器以删除超过90天的行 [英] Create Trigger to delete rows that are >90 days old

问题描述

尝试创建触发器，该触发器将删除90天前的任何记录.我使用了我从stackoverflow找到的触发语句，并对其做了一些更改，但是在我的MySQL Workbench中，我遇到了语法错误.我似乎无法弄清楚哪里出了问题.

Trying to create a trigger that will delete any record that is 90 days old. I used a trigger statement from stackoverflow that I have found and changed the statement a bit, but in my MySQL Workbench, I am getting a syntax error. I cannot seem to figure what is wrong.

以下是我的查询:

create trigger user_connections_dump after insert on user_connections 
for each row
begin
   delete from connection_time where Date('2014-06-09') > Date('now','-90 days')
end;

推荐答案

您的需求看起来更像是事件而不是触发器.

Your need looks more like an Event than a Trigger.

CREATE EVENT IF NOT EXISTS `Clean_Older_Than_90_days_logs`
ON SCHEDULE
  EVERY 1 DAY_HOUR
  COMMENT 'Clean up log connections at 1 AM.'
  DO
    DELETE FROM log
    WHERE log_date < DATE_SUB(NOW(), INTERVAL 90 DAY)

参考: >每天在特定时间的MySQL事件计划程序

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