Table auditing using triggers
The company has decided to keep track of changes made to all the most important tables. One of those tables is Orders.
Any modification made to the content of Orders should be inserted into TablesAudit.
Este exercício faz parte do curso
Building and Optimizing Triggers in SQL Server
Instruções do exercício
- Create a new
AFTERtrigger on theOrderstable. - Set the trigger to fire for
INSERT,UPDATE, andDELETEstatements.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
-- Add a trigger that tracks table changes
___ ___ OrdersAudit
ON Orders
___ INSERT, ___, ___
AS
DECLARE @Insert BIT = 0;
DECLARE @Delete BIT = 0;
IF EXISTS (SELECT * FROM inserted) SET @Insert = 1;
IF EXISTS (SELECT * FROM deleted) SET @Delete = 1;
INSERT INTO ___ (TableName, EventType, UserAccount, EventDate)
SELECT 'Orders' AS TableName
,CASE WHEN @Insert = 1 AND @Delete = 0 THEN 'INSERT'
WHEN @Insert = 1 AND @Delete = 1 THEN 'UPDATE'
WHEN @Insert = 0 AND @Delete = 1 THEN 'DELETE'
END AS Event
,ORIGINAL_LOGIN() AS UserAccount
,GETDATE() AS EventDate;