Learn everything you need to know about triggers in SQL Server, from creating and using them to troubleshooting errors. Read on to know its pros and cons.
A SQL Server trigger is a piece of procedural code. It is just like a stored procedure which is only executed when a given event happens. There are different types of events that can fire a trigger. To name you a few, the insertion of rows in a table, a change in a table structure...
T-SQL to drop a trigger on the table. 1 DROP TRIGGER TRL_UPD_Locations2 Dropping a table will drop all the SQL Server triggers on the table along with the table. DDL Triggers DDL triggers in SQL Server are fired on DDL events. i.e. against create, alter and drop statements, ...
For more information, see CREATE TRIGGER (Transact-SQL). Example: Use the inserted table in a trigger to enforce business rules Because CHECK constraints can reference only the columns on which the column-level or table-level constraint is defined, any cross-table constraints (in this case, ...
Example: Use the inserted table in a trigger to enforce business rules Use the inserted and deleted tables in INSTEAD OF triggers Performance considerations Next steps Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance DML trigger statements use two special tables: thedeleteda...
For another example of an INSTEAD OF trigger you can check out this tip:Using INSTEAD OF triggers in SQL Server for DML operations. You should also consider the fact that someone could accidentally drop the table. In a future tip I will show you how to create a DDL trigger to get that...
None Specifies that there is no specific order in which the DML trigger should be fired. Used mainly to reset a trigger from being either first or last.The following example shows using sp_settriggerorder:Copy sp_settriggerorder @triggername = 'MyTrigger', @order = 'first', @stmttype =...
Applies to:SQL Server This article describes how to configure thenested triggersserver configuration option in SQL Server by using SQL Server Management Studio or Transact-SQL. Thenested triggersoption controls whether anAFTERtrigger can cascade. That is, perform an action that initiates another trigg...
Applies to: SQL Server 2008 (10.0.x) and later. Applies the scope of a DDL or logon trigger to the current server. If specified, the trigger fires wheneverevent_typeorevent_groupoccurs anywhere in the current server. WITH ENCRYPTION
which recurses using a recursive CTE in a single call rather than recursive calls. It will theref...