October 2023
Beginner
398 pages
9h 36m
English
Content preview from Learning Snowflake SQL and Scripting
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Preface
Welcome to Learning Snowflake SQL and Scripting. Perhaps you are brand new to databases and will need to run queries or reports against a Snowflake database. Or perhaps, like myself, you have been working with databases such as Oracle, SQL Server, or MySQL for years, and your company has begun transitioning to cloud-based platforms. Whatever the case, this book strives to empower you with a detailed understanding of Snowflake’s SQL implementation so that you can be as effective as possible.
To help put things in context, I’ll start with a brief history of databases, starting with the introduction of relational databases in the 1980s and leading up to the availability of cloud-based database platforms such as Snowflake. If you’re ready to jump right into learning SQL, feel free to move on to Chapter 1, but you should read “Setting Up a Sample Database” if you want to create your own database with which to experiment.
Relational Database Primer
Computerized database systems have been around since the 1960s, but for the purposes of this book, let’s start with the introduction of relational databases, which started hitting the market in the 1980s with products such as Oracle, Sybase, SQL Server (Microsoft), and Db2 (IBM). Relational databases are based on rows of data stored in tables, and related rows stored in different tables are linked using redundant values. For example, the ACME Wholesale customer can be identified using customer ID 123 in the Customer table, and any ...
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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.