Firing a Trigger for Each Inserted Row

I'm using an INSERT INTO...SELECT * FROM bulk statement to insert records into a table. If I write a trigger on the target table that executes on INSERT, will the trigger fire for each row inserted? If not, how can I get the trigger to fire for each row?

SQL Server triggers fire only once per statement, not once per affected row. So, you'll have to create the multiple-row updates yourself in your trigger.