March 2001
Intermediate to advanced
640 pages
14h 9m
English
book
Sams Teach Yourself Transact-SQL in 21 Days, Second Edition
by Lowell Mauer, David Solomon, Bennett McEwan
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Summary of Search Conditions
Before we start sorting data, let's review what you've learned so far about search conditions:
To improve overall system performance, do all your data filtering on the server. That will reduce network traffic (from transferring unnecessary rows) and simplify application programming.
Search conditions appear in a WHERE clause. The WHERE clause must follow the table list. If no WHERE condition is specified, your query operates on the entire table.
You can use equality, inequality, and range comparisons to test values of any data type. Range searches with datetime values should avoid using BETWEEN.
You will need to combine search conditions with OR and AND. When you combine more than two conditions, especially when OR is ...
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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.