January 2018
Intermediate to advanced
446 pages
12h 57m
English
Content preview from MySQL 8 Cookbook
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Repeatable read
A transaction will see the same data that is read by the first statement even though another transaction has committed the data. All consistent reads within the same transaction read the snapshot established by the first read. An exception is a transaction that can read the data changed within the same transaction.
When a transaction starts and executes its first read, a read view will be created and stay open until the end of the transaction. In order to provide the same result set until the end of the transaction, InnoDB uses row versioning and UNDO information. Suppose Transaction 1 has selected a few rows and another transaction has deleted those rows and committed the data. If Transaction 1 is open, it should be able ...
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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.