July 2006
Intermediate to advanced
560 pages
12h 57m
English
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Retrieving Data with Queries
The most basic SQL statement is a query. A query is a SQL statement that uses the SELECT command to retrieve information from a database. A query's result set is the set of columns and rows that the query requests from a database server. For example, the following query retrieves all rows and columns from the ORDERS table:
NOTEAll relational database systems, including Oracle, do not guarantee the physical order of rows in a table;therefore, do not be surprised if the order of the rows in your result sets are not identical to the order of the rows in the example result sets in this book. Later in this chapter, you ...
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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.