What is the value of Trigger old in before insert?
For an INSERT trigger, OLD contains no values, and NEW contains the new values. For an UPDATE trigger, OLD contains the old values, and NEW contains the new values. For a DELETE trigger, OLD contains the old values, and NEW contains no values.
What is new and old in Trigger?
NEW and OLD are special variables that you can use with PL/SQL triggers without explicitly defining them. NEW is a pseudo-record name that refers to the new table row for insert and update operations in row-level triggers. When a trigger is activated by a DELETE operation, the :NEW. column used in that trigger is null.
When to insert or update only particular record using trigger?
When using triggers (and OUTPUT clause on SELECT or MERGE statements), there’s a special keyword table called inserted that holds the records of the tracking table being inserted or updated. You need to reference this table if you just want to work with these records, and not the whole tracking table, as your example ( FROM dbo.Test ).
Where can I find trigger.old after update?
Trigger.old trigger is available in after update trigger and will hold old copy of current modifying record. Trigger.old is available in Delete trigger.
How to update before trigger in Salesforce developer community?
In the above code you are specificalluy pointing to Contact record with id=0039000000Mehth. When trigger excutes, it will take into the consideration all the records which meet criteria, like here we have Before Update; so any contact record which will get updated will fire the trigger and then the description will be updated.
Why is trigger invoked after update on countries?
[Shashikant]: In this scenario trigger was invoked due to update on countries but you want to udpate another object so your trigger will be on after update event, first you will check whether Country name has been updated and then will update economy object record.