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.

This exercise is part of the course

Building and Optimizing Triggers in SQL Server

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Exercise instructions

Create a new AFTER trigger on the Orders table.
Set the trigger to fire for INSERT, UPDATE, and DELETE statements.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

-- 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;

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