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>and you call all three will it end up doing three i/o's or just one? 

My understanding is that it will do 3 I/Os (sort of!) You'll have 3
reads of the row, but in the case of the 2nd and 3rd "read" the row is
already in memory so it's not like you're going to disk.

I will say this about functions, I've found them to be great -- usually.
However, they are a place to look if performance becomes an issue. I
know we took a sql statement from ~120 seconds to ~1 second by changing
a function call to a join.

-Walden

------------
Walden H Leverich III
Tech Software
(516) 627-3800 x11
WaldenL@xxxxxxxxxxxxxxx
http://www.TechSoftInc.com
 Quiquid latine dictum sit altum viditur.
(Whatever is said in Latin seems profound.)


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