July 2005
Intermediate to advanced
1032 pages
27h 10m
English
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BLOBs
Most database systems provide a data type that can store raw data, and PostgreSQL is no exception. I use the term raw data to mean that the database doesn't understand the structure or meaning of a value. In contrast, PostgreSQL does understand the structure and meaning of other data types. For example, when you define an INTEGER column, PostgreSQL knows that the bytes of data that you place into that column are supposed to represent an integer value. PostgreSQL knows what an integer is—it can add integers, multiply them, convert them to and from string form, and so on. Raw data, on the other hand, is just a collection of bits—PostgreSQL can't infer any meaning in the data.
PostgreSQL offers the type BYTEA for storing raw data. A BYTEA ...
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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.