January 2008
Intermediate to advanced
384 pages
8h 1m
English
Content preview from Joe Celko's Thinking in Sets: Auxiliary, Temporal, and Virtual Tables in SQLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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1.5. Statements Are Not Procedures
Declarative programming is not like procedural programming. We seek to keep the data correct by using constraints that exclude the bad data at the start. We also want to use data rather than computations to solve problems, because SQL is a data retrieval language and not a computational one.
As an example of the difference, the PASS-2006 SQL Server group conference has a talk on Common Language Resources (CLR) in that product. This is a proprietary Microsoft “feature” that lets you embed any of several procedural or OO languages inside the database. The example the speaker used was putting a Regular Expression object to parse an e-mail address as a constraint.
The overhead was high, execution time was slow, ...
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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.