OOW 2012: Little things make me happy

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Yesterday evening we had the annual “We went to OOW and this is what’s new in the world we call Oracle” at AMIS.
Starting around 5pm and ending around 10pm a lot of information was presented by several AMIS colleagues.

My contribution to the evening was (amongst others) a little bit of new features in SQL and PL/SQL, only a little bit as there is too much to cover in just 20 minutes.

It’s the little things that make me happy. What is the little thing that I like?

When you define a table you can assign a default value to a column (here it comes) based on a sequence.
Take a look at the following (taken from the presentation Tom Kyte did during OOW):

First a sequence is created, with the resounding name S. Next the table (named T) is created where the column X has a default based on the NEXTVAL of the sequence S.

Just to repeat the line of interest:

x int default s.nextval primary key

How cool is that?

No longer will you need to create a trigger to fill the column with the nextvalue from a sequence, you just declare it this way and you’re done.

Maybe it’s just syntactic sugar, I don’t know (yet) and frankly I don’t care. I like the fact that this feature makes it more declarative to populate the primary key (or any other column of course).

I’m happy.

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Alex Nuijten

alex.nuijten@amis.nl

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