Change status automatically using trigger from database when system date and date(from database) are equal

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Change status automatically using trigger from database when system date and date(from database) are equal

My table is-:

Employee

Id Status Date
1 false 2015-06-25
2 false 2015-06-25
3 false 2015-06-26
4 false 2015-06-26

If system date will be '2015-06-25' then using trigger status of Id:1 and 2 will be true and if system date will be '2015-06-26' then it will change the status false to true.

Posted 25-Jun-15 1:19am

Abhishek Burrnwal

Updated 25-Jun-15 2:09am

v2

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John C Rayan 25-Jun-15 7:41am

Can you explain it more clearer? What do you want to do? Do you want to update the status column using a trigger when the system date and date in the row matches?

Abhishek Burrnwal 25-Jun-15 7:47am

when system date change after that check Date value match the system date then status value to automatically change.

John C Rayan 25-Jun-15 8:15am

Right! The trigger will only work for some events like INSERT , UPDATE or DELETE etc. For your requirements you may have to run a job in the SQL server daily to check the system date and any match in the rows then update the status.

TenmanS14 25-Jun-15 9:11am

yup, and if your using express edition then you can do it with scheduled tasks, batch files and the sqlcmd command, prob. run it at 00:01 everyday....

TenmanS14 25-Jun-15 9:21am

oops... mySQL, assuming your on a 'nix machine you do it with a cron job

CHill60 25-Jun-15 8:17am

When you say "system date" do you mean it is another day (in real life) - but nothing has changed on this table?
If so then a trigger is not what you need

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John C Rayan · Answer 1 · 2015-06-25T04:03:00

Solution 1

For MySQL , follow this

https://dev.mysql.com/doc/refman/5.1/en/events-overview.html[^]

Posted 25-Jun-15 4:03am

John C Rayan

v5

TenmanS14 · Answer 2 · 2015-06-25T03:53:00

Solution 3

http://www.sitepoint.com/how-to-create-mysql-events/[^]

see here for mySQL

Posted 25-Jun-15 3:53am

TenmanS14