December 2002
Intermediate to advanced
928 pages
85h 29m
English
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LEAD
LEAD (expr[,offset][,default]) OVER (analytic_clause)
Provides access to more than one row of a table at the same time without a self-join. Analytic function only.
Parameters
- offset
Physical offset after the current row for an additional row to be retrieved.
- default
Value returned if the offset goes beyond the scope of the window.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.