Since triggers execute as part of a transaction, the following statements are not allowed in a trigger:
All create commands, including create database, create table, create index, create procedure, create default, create rule, create trigger, and create view
All drop commands
alter table and alter database
truncate table
grant and revoke
update statistics
reconfigure
load database and load transaction
disk init, disk mirror, disk refit, disk reinit, disk remirror, disk unmirror
select into
