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)

Exploring the concept of streams to capture table-level changes

In this recipe, we will explore the concept of streams, configure a stream on a table, and capture the changes that occur at the table level. Streams are Snowflake's way of performing change data capture on Snowflake tables and can be useful in data pipeline implementation.

Getting ready

The steps for this recipe can be run either in the Snowflake web UI or the SnowSQL command-line client.

How to do it…

The steps for this recipe are as follows:

  1. Let's start by creating a database and a staging table on which we will create our stream object. We create a staging table to simulate data arriving from outside Snowflake and being processed further through a stream object:
    CREATE DATABASE stream_demo;
    USE DATABASE stream_demo;
    CREATE TABLE customer_staging
    (
      ID INTEGER,
      Name STRING,
      State STRING,
      Country STRING
    );
  2. The process of creating...