Book Image

HP Vertica Essentials

By : Rishabh Agrawal
Book Image

HP Vertica Essentials

By: Rishabh Agrawal

Overview of this book

<p>With the rise of Massively Parallel Processing (MPP) and NewSQL databases, many users are confused about which MPP technology to opt for. Today, HP Vertica is gaining a lot of traction as a major MPP technology. Vertica's distributed architecture allows fast query processing, and it is a highly fault-tolerant architecture, thus making it one of the most sought-after MPP databases today.</p> <p>HP Vertica Essentials will help you to learn day-to-day administration activities in a step-by-step format. You will start by learning how to install Vertica, followed by its management and monitoring. You will learn about the different backup and restore techniques, including the concept of projections in Vertica. Finally, you will explore the various techniques to improve performance and bulk loading in Vertica. By the end of this book, you will be able to install, manage, and monitor Vertica efficiently.</p>
Table of Contents (13 chapters)

Data transformation


Using the COPY command, we can control the columns in which the values need to be inserted for a table. Moreover, the COPY command supports operators, constants, Nulls, and comments. It should be noted that the COPY command cannot use the analytic and aggregate functions while loading the data, although it supports the following types of functions:

  • Date/time

  • Formatting

  • Numeric

  • String

  • Null handling

  • System information

You can also ignore columns from source files. For that, we need to use the FILLER option.