SQL Server Drop Trigger If Exists

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SQL Server Drop Trigger If Exists

Here we will learn and comprehend how the SQL Server drop trigger if exists statement works in this SQL Server. To help you comprehend the idea better, we will also talk about and learn various examples. The complete list of subjects we will address is provided below.

  • SQL Server Drop Trigger If Exists
  • SQL Server Drop Trigger If Exists Example
  • SQL Server Disable Trigger If Exists
  • SQL Server 2014 Drop Trigger If Exists

Also, check the related SQL Server tutorial: SQL Server Update Trigger Only If Column is Modified

SQL Server Drop Trigger If Exists

In this section, we will learn and understand how to use the SQL Server DROP TRIGGER statement with the IF EXISTS clause of the table by the query. And which will be explained with the help of syntax and illustrated examples.

The SQL Server DROP TRIGGER statement is used to drop more than one trigger from the database by the query. Here is an illustrated syntax of the DROP TRIGGER statement by the following query:

SYNTAX:

DROP TRIGGER IF EXISTS [SCHEMA_NAME].[YOUR_TRIGGER_NAME];

Here is a syntax explanation of the above query:

  • The IF EXISTS statement is used to remove the trigger only when it exists.
  • The SCHEMA_NAME is the name of the schema to which the DML statement belongs.
  • The YOUR_TRIGGER_NAME is the name of the trigger that we want to remove from the database. If we want to remove multiple triggers from the database then we will the comma (,) separator in the query.

Here is an illustrated syntax of the DROP TRIGGER statement on the DDL triggers by the following query:

SYNTAX:

DROP TRIGGER IF EXISTS YOUR_TRIGGER_NAME
ON { DATABASE | ALL SERVER };

The syntax explanation:

  • The DATABASE indicated the scope of the DDL trigger which is applied to the current database.
  • The ALL SERVER indicated the scope of the DDL trigger which is applied to the current server.

SYNTAX of the LOGON event TRIGGER:

DROP TRIGGER IF EXISTS YOUR_TRIGGER_NAME 
ON ALL SERVER;
  • Once we drop a table, triggers that are associated with the table will be removed automatically.

We hope that you have understood how to use the SQL Server DROP TRIGGER statement with the IF EXISTS clause on the table by the query. For a better elucidation, we have used an example and explained it in deepness.

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SQL Server DROP TRIGGER If Exists Example

We will learn and understand how to use the SQL Server DROP TRIGGER statement with the IF EXISTS clause of the table by the query. And which will be explained with the help of an illustrated example.

EXAMPLE:

DROP TRIGGER IF EXISTS TR_SQLSERVER;

In this preceding query, the DROP TRIGGER statement has been used to drop a trigger called TR_SQLSERVER from the database with the help of the IF EXISTS clause. The purpose of the IF EXISTS clause is that it will check the trigger name whether exists in the database or not.

If the trigger_name which we haven’t created in the database, the DROP TRIGGER statement will still execute it successfully.

We hope that you have understood how to use the SQL Server DROP TRIGGER statement with the IF EXISTS clause on the table by the query. For a better understanding, we have used an example and explained it in deepness.

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SQL Server Disable Trigger If Exists

In this SQL Server section, we will learn and understand how to disable a trigger by using the SQL Server DISABLE TRIGGER statement on the table by the query. And this will be explained with the help of an illustrated example and syntax.

Sometimes, for troubleshooting or data recovering purposes, we want to disable to trigger for temporary purposes. For that, we want to use the DISABLE TRIGGER statement, and here is the syntax for the following query:

SYNTAX:

DISABLE TRIGGER  IF EXISTS [SCHEMA_NAME].[YOUR_TRIGGER_NAME]
ON [ OBJECT_NAME | DATABASE | ALL SERVER ];

Here is a syntax explanation:

  • By utilizing the DISABLE TRIGGER keyword, we first need to supply the name of the trigger that we wish to disable as well as the schema name to which it belongs.
  • If the trigger is a DML trigger, second, indicate the table name or view that it is attached to. If the trigger is a DDL database scoped trigger, we will use the DATABASE, and if it is a DDL server scoped trigger, we will use the SERVER.

Here is an illustrated example of the SQL Server DISABLE TRIGGER statement to the table by the following query:

EXAMPLE:

DISABLE TRIGGER  TR_SQLSERVER 
ON MIT_UNIVERSITY;

In this preceding query, the DISABLE TRIGGER statement is used to disable the trigger name as TR_SQLSERVER from the MIT_UNIVERSITY table. We can’t use the IF EXISTS clause with the DISABLE TRIGGER statement because it showed in the syntax of the DISABLE TRIGGER statement of the database or server by the query.

We hope that you have understood the subtopic “SQL Server Disable Trigger If Exists” by using the DISABLE TRIGGER statement on the table by the query. For better illustration, we have used an example and explained it in deepness.

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SQL Server 2014 Drop Trigger If Exists

We will learn and understand how to use the SQL Server DROP TRIGGER statement on the table by the query. And which will be explained with the help of an illustrated example.

It’s important to note that SQL Server 2016 added the IF EXISTS clause to the DROP TRIGGER statement. Therefore, it is incompatible with prior versions. But the improvement made to the DROP TRIGGER statement helped to deploy scripts so that our deployment script won’t fail if a trigger doesn’t exist.

Here is a demonstrated example of the SQL Server DROP TRIGGER statement for deleting a trigger and creating an earlier for the next statement by the following query:

EXAMPLE:

DROP TRIGGER DBA.TR_SQLSERVER;

In this above query, we have used the DROP TRIGGER statement to delete triggers called TR_SQLSERVER from the database.

We hope that you have understood the subtopic “SQL Server 2014 Drop Trigger If Exists” by using the DROP TRIGGER statement on the table by the query. For better performance, we have used an example and explained it in depth.

Also, take a look at some more SQL Server tutorials.

So, in this SQL Server tutorial, we learned how SQL Server Drop Trigger If Exists statement works. To help you comprehend the idea better, we also discussed and learned various examples. The complete list of subjects we will address is provided below.

  • SQL Server Drop Trigger If Exists
  • SQL Server Drop Trigger If Exists Example
  • SQL Server Disable Trigger If Exists
  • SQL Server 2014 Drop Trigger If Exists