May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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Making bulk data changes using server-side procedures with transactions
In some cases, you’ll need to make bulk changes to your data. In many cases, you need to scroll through the data making changes according to a complex set of rules. You have a few choices in that case:
- Write a single SQL statement that can do everything
- Open a cursor and read the rows out, then make changes with a client-side program
- Write a procedure that uses a cursor to read the rows and make changes using server-side SQL
Writing a single SQL statement that does everything is sometimes possible, but, if you need to do more than just UPDATE then it becomes difficult very quickly. The main difficulty is that the SQL statement isn't restartable, so, if you need to interrupt ...
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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.