Solved

mysql trigger refer to the "table name"

Posted on 2014-01-08
2
1,183 Views
Last Modified: 2014-01-08
Hello Experts,

Inside the code of the trigger, is it possible to get the name of the table that the trigger belongs to?

Something like "thistrigger.tablename" lol...

Thx in advanced
0
Comment
Question by:justaphase
2 Comments
 
LVL 59

Accepted Solution

by:
Kevin Cross earned 500 total points
ID: 39765975
Hi.

Triggers have a NEW and OLD to access columns of the inserted and deleted rows, respectively; however, it does not have a keyword for its own metadata as you showed.  To get information about trigger, you can query INFORMATION_SCHEMA.TRIGGERS.

For example:
SELECT EVENT_OBJECT_TABLE 
INTO @table_name
FROM INFORMATION_SCHEMA.TRIGGERS
WHERE TRIGGER_NAME = 'trigger name here'
;

Open in new window


Triggers are table-specific, so it is just as easy to hard-code the table name in the trigger body.  However, if the concern is that you may change the table name later, you can use the above query to dynamically find the table name.  Although, it also is vulnerable to trigger name changes.  Therefore, you will have to maintain the trigger body in either case.

I hope that helps.
0
 
LVL 1

Author Closing Comment

by:justaphase
ID: 39766774
Yes it helps!
I would prefer the table name, but since it's impossible, that's a good way to start.
It's more probable to change the table name, that is to change the trigger name.

Thx!
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Does the idea of dealing with bits scare or confuse you? Does it seem like a waste of time in an age where we all have terabytes of storage? If so, you're missing out on one of the core tools in every professional programmer's toolbox. Learn how to …
This article describes how to use the timestamp of existing data in a database to allow Tableau to calculate the prior work day instead of relying on case statements or if statements to calculate the days of the week.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question