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Text Search pattern in Teradata with Java , SQLJ
Short teaser: Enhance Analytics, Text Seacrh Analytics, especially hadoop, Big dataCover Image: Unstructured data can be dealt with effortlessly in Teradata. Regular expression has been around for many...
View ArticleIdentifying Java Client Software
Beginning with Teradata Database 14.0 and Teradata JDBC Driver 13.10.00.21, the Client Attributes feature records a variety of information about the client system and client software in the system...
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A Closer Look at How to Set up a Parsing-Only Workload
Note: This content only applies to releases earlier than Teradata Database 14.10.05. If you are on Teradata Database 14.10.05 or later releases, please look at the more recent posting titled: A New...
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Just a Little Bit More
Cover Image: The theme of this blog is an examination of forces that would disrupt existing data warehouse implementations. I categorize these as either long tail or black swan events.Data lakes (and...
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Example Java UDF for Table Hash Calculations
Short teaser: A Java UDF - with not good performance - is shared for a table hash calculationThere is a demand to have a functionality similar to the industry standard SHA256 hash function to condense...
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New, Simplified Approach to Parsing Workload Selection
Cover Image: As of Teradata Database 14.10.05 and 15.00.03, a simplified approach to determining which workload will support session management and parsing has been adopted This posting describes this...
View ArticleThe Teradata JDBC Driver's COP Discovery, LCC, Logon, and more
The Teradata JDBC Driver Engineering team receives a lot of questions about what happens when a JDBC connection is created. Let's clarify the concepts Laddered Concurrent Connect (LCC) versus COP...
View ArticleConfiguring Redrive and Recoverable Network Protocol in the .NET Data Provider
IntroductionThis blog will introduce the reader to a short description of Redrive and Recoverable Network Protocol in the .NET Data Provider and some of the restrictions that are present in supporting...
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How to Fix the Data Scientist Shortage
Cover Image: The amount of data that is now available for analysis is growing at an exponential rate. As the hardware to capture the data becomes cheaper, faster and omnipresent, the amount of data...
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Global Weights in SLES 11 Priority Scheduler
Cover Image: Think about the priority part of workload management for a minute.The settings that the administrator makes when defining priorities for different workloads are on the surface--things like...
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AMP Worker Task Resource Limits & Increased Load Limits for MLOADX
Cover Image: MLOADX is a new load utility enhancement introduced in Teradata Database 14.10 which is intended to overcome some of the limitations that are associated with standard MultiLoad. This...
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Teradata Basics: Parallelism
Cover Image: This “Teradata Basics” posting describes the current dimensions of parallelism in the Teradata Database, and how they work together. What is Query Parallelism?Executing a single SQL...
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Special Treatment For Users DBC and TDWM
Cover Image: If you are user DBC or user TDWM and you log onto a Teradata Database, you might get treated somewhat differently than other users. This posting describes what user DBC and user TDWM do,...
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TDPython Pivot
Short teaser: PoC which evaluated to TDPyton devobs approachCover Image: In July 2015 Eric shared on http://developer.teradata.com/tools/reference/teradata-python-module insights on the Teradata Python...
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Things that Run in the Session Workload
Cover Image: You may want to skip over this posting. Unless you’re curious about some of the more obscure workload classification conventions used by TASM and TIWM.In a previous blog posting titled “A...
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Data Scientists: Welcome to The Machine
Cover Image: Earlier this year I posited that, due to the exponential rate of growth, the amount of data collected for analysis is becoming beyond the scope of the current analytical staffs to examine...
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Incremental Planning and Execution
Cover Image: Traditionally, query optimizers depend on information available at optimization time such as statistics, cost parameters, predicate values, and resource availability in order to perform...
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PHP with Teradata ODBC
Short teaser: A high-level tutorial on connecting to the Teradata Database with the ODBC Driver using PHP 1Introduction This document is a high-level tutorial that describes how to connect to...
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Python with Teradata ODBC
Short teaser: A high-level tutorial on connecting to the Teradata Database with the ODBC Driver using Python 1Introduction This document is a high-level tutorial that describes how to connect to...
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R with Teradata ODBC
Short teaser: A high-level tutorial on connecting to the Teradata Database with the ODBC Driver using R 1Introduction This document is a high-level tutorial that describes how to connect to...
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Perl with Teradata ODBC
Short teaser: A high-level tutorial on connecting to the Teradata Database with the ODBC Driver using Perl 1Introduction This document is a high-level tutorial that describes how to connect to...
View ArticleLOB Locator Lifetime
Every so often, the Teradata JDBC Driver Engineering team is asked about Teradata Database Error 5766 "The Locator is invalid because the response spool has been dropped." Why does it happen? How can...
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Being Smart About Using Workload Classification
Cover Image: Have you ever found yourself confused when setting up classification criteria for a new workload in Teradata? You’re not alone. This posting discusses the main principles at work when it...
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A Closer Look at Tactical Workload Exceptions
Cover Image: Tactical workload exceptions are in place to prevent tactical queries from consuming unreasonable amounts of resources. It is important to have this protection because the super-priority...
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Reserved AMP Worker Tasks Exclusively for Utility Jobs, Maybe
Cover Image: Teradata is a message passing system. Messages are sent from parsing engines to AMPs, and from AMPs to AMPs, and from AMPs to parsing engines. That’s the key way that components in a...
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