Book Image

Teradata Cookbook

By : Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati
Book Image

Teradata Cookbook

By: Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati

Overview of this book

Teradata is an enterprise software company that develops and sells its eponymous relational database management system (RDBMS), which is considered to be a leading data warehousing solutions and provides data management solutions for analytics. This book will help you get all the practical information you need for the creation and implementation of your data warehousing solution using Teradata. The book begins with recipes on quickly setting up a development environment so you can work with different types of data structuring and manipulation function. You will tackle all problems related to efficient querying, stored procedure searching, and navigation techniques. Additionally, you’ll master various administrative tasks such as user and security management, workload management, high availability, performance tuning, and monitoring. This book is designed to take you through the best practices of performing the real daily tasks of a Teradata DBA, and will help you tackle any problem you might encounter in the process.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Writing queries


Here we will assume that the reader is well versed with Teradata SQL syntax and has all the required tools to connect and execute the queries on Teradata.

Every SQL statement that executes on Teradata database consumes CPU, IO, AWT, and Spool.

Teradata's architecture is based on parallelism, which essentially means the efficiency of the query is based on how parallel efficient the query execution is, meaning how well it could leverage Teradata's parallelism. However, it also has an exception which will be covered in a later part of the chapter.

Getting ready

Teradata has many tools for writing the queries; you can use SQLA or a BTEQ for executing queries. There are also many third-party applications that connect to Teradata database using a data connector such as ODBC, JDBC, or .NET. Data loading utilities such as FastLoad, Multiload, or TPT can also be invoked using BTEQ or third-party apps. Here, we will use SQLA, the simplest of tools, to write a query, and show you how to...