Book Image

Snowflake Cookbook

By : Hamid Mahmood Qureshi, Hammad Sharif
Book Image

Snowflake Cookbook

By: Hamid Mahmood Qureshi, Hammad Sharif

Overview of this book

Snowflake is a unique cloud-based data warehousing platform built from scratch to perform data management on the cloud. This book introduces you to Snowflake's unique architecture, which places it at the forefront of cloud data warehouses. You'll explore the compute model available with Snowflake, and find out how Snowflake allows extensive scaling through the virtual warehouses. You will then learn how to configure a virtual warehouse for optimizing cost and performance. Moving on, you'll get to grips with the data ecosystem and discover how Snowflake integrates with other technologies for staging and loading data. As you progress through the chapters, you will leverage Snowflake's capabilities to process a series of SQL statements using tasks to build data pipelines and find out how you can create modern data solutions and pipelines designed to provide high performance and scalability. You will also get to grips with creating role hierarchies, adding custom roles, and setting default roles for users before covering advanced topics such as data sharing, cloning, and performance optimization. By the end of this Snowflake book, you will be well-versed in Snowflake's architecture for building modern analytical solutions and understand best practices for solving commonly faced problems using practical recipes.
Table of Contents (12 chapters)

Generating sequences in Snowflake

Sequence generation is a common practice in data warehousing that's required in different scenarios where row uniqueness is needed. This recipe will demonstrate what sequence value variations can be made with Snowflake sequences, while also demonstrating how to configure a column in a table so that it defaults to an auto-increment value.

Getting ready

Note that this recipe's steps can be run either in the Snowflake WebUI or the SnowSQL command-line client.

How to do it…

In this recipe, we shall be exploring the sequence creation process and the various parameters that control a sequence's behavior. Then, we will create and populate tables where their column values are based on values from sequences. Let's get started:

  1. We will start by creating a database where we will create the objects for this recipe. Within this database, we will create a basic sequence object, as shown here:
    CREATE DATABASE C9_R6;...