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

Resolving failure 7547


This error is associated with the UPDATE statement, which could be SQL based or could be in MLOAD.

Various times, while updating the set of rows in a table, the update fails on Failure 7547 Target row updated by multiple source rows.

This error will happen when you update the target with multiple rows from the source. This means there are duplicated values present in the source tables.

Getting ready

Let's create sample volatile tables and insert values into them. After that, we will execute the UPDATE command, which will fail to result in 7547:

  1. Create a TARGET TABLE with the following DDL and insert values into it:
** TARGET TABLE**
create volatile table accounts
(
CUST_ID,
CUST_NAME,
Sal
)with data
primary index(cust_id)
insert values (1,'will',2000);
insert values (2,'bekky',2800);
insert values (3,'himesh',4000);
  1. Create a SOURCE TABLE with the following DDL and insert values into it:
** SOURCE TABLE**
create volatile table Hr_payhike
(
CUST_ID,
CUST_NAME,
Sal_hike
) with...