Teradata Concurrency Control: Locking and Transactions Explained
Learn how Teradata Concurrency Control uses locking and transactions to prevent simultaneous updates, deletions, or insertions in different sessions.
SQL
A collection of 180 issues
Teradata SQL Performance: IN vs BETWEEN and the Use of Statistics on Columns
Learn about optimizing SQL queries in Teradata 14.10 by analyzing the execution plan of two queries and using statistics on columns and expressions.
The Importance of Avoiding SQL Functions on WHERE Condition Columns for Optimizer Performance
Learn why it's important to be careful when applying SQL functions on WHERE condition columns and how it can impact query performance.
Improve Query Performance by Using the Teradata CLOB Datatype for Storing Longer Texts
Learn how the Teradata CLOB datatype can improve query performance and reduce resource consumption for storing longer texts in your database.
Teradata Join Optimization: Early and Partial GROUP BY Techniques for Decision Support Workload
Learn how Teradata applies two effective join optimization methods, Early and Partial GROUP BY, for decision support workloads with lots of aggregations. These transformations reduce resource usage and are widely used in modern databases. Discover how to improve the optimizer's chance to apply these
Understanding Teradata Value Ordering for Improved Range Scans and Data Retrieval
Learn about Teradata value ordering, an optimization technique for range scans of 32-bit integers. Read on to understand how it is implemented.
Static and Dynamic SQL Characteristics: Examples and Differences
Learn about the characteristics of static and dynamic SQL in Teradata stored procedures. Discover how to use variables and parameters in SQL statements.
How to Avoid Full Table Scans When Using LIKE Operators in Teradata Indexing
Learn how to avoid resource-killing full table scans on extensive tables with Teradata Indexing. Discover a fantastic trick to optimize query performance.
Teradata SQL Stored Procedures: Adding Procedural Functionality to Your RDBMS
Teradata SQL Stored Procedures enhance traditional SQL with procedural language features like iterations, condition and error handling, and variables. Learn more here.
Improve Performance with Teradata Partition Elimination: The Stored Procedure Approach
Learn how to solve the problem of accessing a table containing many rows using Teradata Partition Elimination with a Stored Procedure.