Create an INSERT trigger to increment a product count.

Here is the code

create table Products ( ID int identity primary key )
GO
create table ProductCounter ( ProductCount int not null default 0 )
GO
insert ProductCounter default values
GO
create trigger trgIncrementProductCount
on Products
after insert
as
begin
    update  ProductCounter
    set ProductCount = ProductCount + 1
end
GO

insert Products default values
insert Products default values
select * from ProductCounter

insert Products default values
insert Products default values
select * from ProductCounter