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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Consider one more scenario: an application runs a huge number of small lookup queries. This can easily happen with modern Object Relational Mappers (ORMs) and other toolkits that do a lot of work for the programmer, but at the same time, hide a lot of what is happening.
For example, if you define an HTML report over a query in a templating language, and then define a lookup function to resolve an ID inside the template, you may end up with a form that performs a separate, small lookup for each row displayed, even when most of the values looked up are the same. This doesn't usually pose a big problem for the database, as queries of the SELECT name FROM departments WHERE id = 7 form are really fast when the row for id = 7 is in ...
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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.