Only if you're caught unaware. It turns out that things like GUIDs (for example) have this nice even distribution across the entire domain of rows in the table or index and it's something you can take huge advantage of that you can't even do with ever-increasing "append only" rows and that's go WEEKS and even months without ANY page splits, not even the "good" page splits that plague append-only indexes.
Unless there's a concentrated campaign, telephone numbers are frequently very close to the even distribution of GUIDs and can take that same advantage.
The trouble is, people keep screwing up such wonders by using current "Best Practice" methods of index maintenance which, ironically, creates a nasty drug-habit-like Catch-22 that creates the need for defragmentation.
And, no... updates alone don't cause page splits unless unless you have a page that's 100% full or you have an "expAnsive".
It all comes down to Fill Factor, when to defrag, and whether to use Reorg or Rebuild... and the current "Best Practice" methods aren't the right combination for any of that. Heh... I've got a couple of hundred hours in testing to prove all of this and am going to try to summarize it in a 2 hour presentation at the Pittsburgh SQL Saturday this year.
is pronounced "ree-bar
" and is a "Modenism
" for R
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
"If you think its expensive to hire a professional to do the job, wait until you hire an amateur."--Red Adair
"Change is inevitable... change for the better is not."
When you put the right degree of spin on it, the number 3|8
is also a glyph that describes the nature of a DBAs job. 😉
How to post code problems
Create a Tally Function (fnTally)