Hi Friends,

My bad; what I should be blogging as Part 1, I am doing as PART 2. Yesterday, I blogged on how SEQUENCE objects in DENALI behave within transactions. You can see that here;

Today, I want to show you how you can use SEQUENCE numbers instead of IDENTITY columns to insert global serial values in your tables.

First create the SEQUENCE object:

Next, create two tables:

In the above code, you can observe that we have  put the NEXT VALUE statement as a default for OrderID column. This is how the next number of a SEQUENCE object would be inserted for every new record.

Let us insert some data and test:

Run the above code 3 or 4 times.

And check what has been inserted:

Here is the output:


This is how you can use SEQUENCE object as a global serial number generator, common to multiple tables. In my next post I shall try to show you a few more things with SEQUENCE objects.