Question

The example will give a brief explanation of what i’m talking about:

 AFTER INSERT,UPDATE
 IF (This.Active = 1) 
      BEGIN
         UPDATE Table2 SET AllActive = 1 WHERE This.ID = Table2.ID
      END
 ELSE
      BEGIN
         UPDATE Table2 SET AllActive = 0 WHERE This.ID = Table2.ID
      END

I’m using this because that’s what i’m looking to do.

Do Triggers have a this like javascript?

If not, What’s the next best thing?

Answer 1

One common misconception about triggers in SQL Server: they are NOT fired per row affected – but by statement.

And therefore, when you have a statement that inserts or updates several rows, your Inserted (and/or Deleted) pseudo tables in the trigger will contain multiple rows. Do NOT assume you’re dealing with a single row! Such a trigger will fail sooner or later

So in your case, you would probably want to write something like this:

  UPDATE t 
  SET AllActive = i.Active
  FROM Inserted i
  INNER JOIN dbo.Table2 AS t 
  ON t.ID = i.ID

This will update all rows in the Table2 table and set the AllActive column to the value of Active, for each row that’s contained in the Inserted table (contains the newly inserted rows, and the new values for the updated rows)