November 2015
Beginner
464 pages
9h 46m
English
Content preview from Learning PostgreSQLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Schema difference
When one works on a new version of the database schema for an application, sometimes, it is necessary to understand the difference between the old and new structure. This information is used in release notes, and it can also be analyzed to check if the changes might have any undesired impact on other applications.
The differences can be found using conventional command-line utilities.
For example, suppose one changed the structure of the car portal database, which is used as a sample database in this book. The script to create the database is in the addendum. To learn how to create a database and how to use the psql console and other PostgreSQL utilities, please refer to the previous chapters.
First, let's create another database ...
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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.