What does disable trigger do?
Disabling a trigger does not delete it, but rather prevents it from firing when any Transact-SQL statements on which it was programmed are executed, allowing the trigger to still exist as an object in the current database. The main purpose of disabling a trigger is to temporarily prevent it from executing its associated actions, which can be useful for maintenance, testing, or troubleshooting purposes, and can be re-enabled using the ENABLE TRIGGER statement.
Understanding Triggers and Their Purpose
Triggers are used to enforce business rules, maintain data integrity, and automate certain actions within a database, and can be triggered by various events, such as inserting, updating, or deleting data in a table.
FAQs About Disabling Triggers
1. What happens when a trigger is disabled?
When a trigger is disabled, it still exists as an object in the current database, but it does not fire when any Transact-SQL statements on which it was programmed are executed.
2. Can triggers be enabled or disabled?
Yes, triggers can be enabled or disabled using the ENABLE TRIGGER and DISABLE TRIGGER statements, respectively.
3. How to disable trigger in Oracle?
To disable a trigger in Oracle, use the ALTER TRIGGER statement followed by the DISABLE keyword, for example: ALTER TRIGGER user_trigger DISABLE.
4. What is the main purpose of a trigger?
The main purpose of a trigger is to enforce business rules, maintain data integrity, and automate certain actions within a database.
5. Why do some pistols have 2 triggers?
Some pistols have two triggers as a safety feature, where the secondary “fin” is a safety mechanism that prevents the striker from moving if the shooter does not properly engage the pistol trigger.
6. Can we disable a trigger?
Yes, a trigger can be disabled using the DISABLE TRIGGER statement or by using ALTER TABLE for DML triggers defined on tables.
7. How do I disable a trigger in a query?
To disable a trigger in a query, use the DISABLE TRIGGER statement, for example: DISABLE TRIGGER Sales.bonus_reminder.
8. How to check if trigger is enabled in Oracle?
To check if a trigger is enabled in Oracle, use the SELECT STATUS FROM USERTRIGGERS statement, for example: SELECT STATUS FROM USERTRIGGERS WHERE TRIGGERNAME = ‘thetrigger_name’.
9. What is the difference between triggers and drivers?
A trigger can be defined as an event that activates the disease process, whereas a driver can be defined as a factor that powers and maintains the disease.
10. Why triggers are bad?
Triggers are considered bad because they are easily forgotten, hard to fit into the development or deployment process, and difficult to debug.
11. Are triggers a bad thing?
Triggers can elicit strong negative emotions and may cause people to feel unsafe or threatened, leading to reactions such as panic, escape, or defensiveness.
12. Is it OK to avoid triggers?
While it is sometimes reasonable to avoid a triggering situation, avoidance can hinder one’s ability to function, and seeking help through therapy can be beneficial in learning to cope with triggers.
13. Can we disable a trigger on table?
Yes, DML triggers defined on tables can be disabled or enabled using ALTER TABLE.
14. How do I disable all triggers?
To disable all triggers associated with a table, use the ALTER TABLE statement with the DISABLE TRIGGER keyword and the ALL keyword, for example: ALTER TABLE table_name DISABLE TRIGGER ALL.
15. Are triggers good or bad in SQL?
Triggers are useful in SQL if you need to ensure that certain events always happen when data is inserted, updated, or deleted, but can be bad if not used properly, leading to debug pain and maintenance issues.