Vertica Blog

Vertica Blog

Vertica 9

Converting CHAR and VARCHAR to BINARY or VARBINARY

Sarah Lemaire, Manager, Vertica Documentation
August 16, 2018

Jim Knicely authored this tip. As of Vertica 9.1.1, explicit coercion (casting) from CHAR and VARCHAR data types to either BINARY or VARBINARY data types is supported! Prior to Vertica 9.1.1: dbadmin=> INSERT INTO test_coercion SELECT 'Convert me!'; OUTPUT -------- 1 (1 row) dbadmin=> SELECT c1::VARBINARY FROM test_coercion; ERROR 2366: Cannot cast type varchar to...
Modern Database Analytics

Change the Owner of a Schema

Sarah Lemaire, Manager, Vertica Documentation
August 13, 2018

Jim Knicely authored this tip. As of Vertica 9.1.1, you can now transfer the ownership of a schema to another user! dbadmin=> CREATE USER etl_user; CREATE USER dbadmin=> ALTER SCHEMA my_etl_schema OWNER TO etl_user; ALTER SCHEMA dbadmin=> SELECT schema_name, schema_owner FROM schemata WHERE schema_name = 'my_etl_schema'; schema_name | schema_owner ---------------+-------------- my_etl_schema | etl_user (1 row)...

Important: gcc and Ubuntu 16.04 Incompatibility

Sarah Lemaire, Manager, Vertica Documentation
June 8, 2018

Vertica 9.0.1-9 and later 9.0 hotfixes now support Ubuntu 16.04. However, Ubuntu 16.04 ships with a compiler that is incompatible with the Vertica C++ SDK. To compile UDxs on this platform, you must install packages for 4.8 compatibility: $ sudo apt-get install gcc-4.8 $ sudo apt-get install g++-4.8 $ cd /usr/bin $ sudo ln -s...

What’s New in 9.1: Voltage SecureData Integration

Gary Gray, Principal Information Developer
June 6, 2018

Vertica Version 9.1 introduces a new integration with Voltage SecureData. This feature lets you use encryption to protect sensitive data within your Vertica database. It works within your existing database schema and clients. You can even automate data decryption. This automation makes decryption transparent and removes the need to change your existing SQL queries. What...

Announcing Vertica 9.x Query Performance Tuning Training

Soniya Shah, Information Developer
May 29, 2018

This blog post was authored by Drea Brandford. You have had Vertica up and running in production for a while now; but you’re noticing that, while your analytic queries are executing far faster than they would in a traditional row-store database, they are still not performing quite as fast as you need them to. Chances...
Database Server Room

Vertica Quick Tip: Tuple Mover (TM) Assigned More Resources in Vertica 9.1

Soniya Shah, Information Developer
May 24, 2018

This blog post was authored by Jim Knicely. In version 9.1 and later, Vertica increases the default amount of memory assigned to the Tuple Mover (TM) resource pool from 200MB to 5% of available memory to improve performance merging out wide tables. If your General resource pool is defined by a percentage, the Tuple Mover...

What’s New in Vertica 9.1: Precision-Recall Curve and F1-Score Machine Learning Evaluation Functions

Soniya Shah, Information Developer
May 14, 2018

This blog post was authored by Ginger Ni. The precision-recall curve is a measure for evaluating binary classifiers. It is a basic measure derived from the confusion matrix. In Vertica 9.1, we provide a new machine learning evaluation function PRC() for calculating precision and recall values from the results of binary classifiers. Along with the...
Database Server Room

Unlock Data Analytics for Dynamic Workloads with Vertica 9.1

Soniya Shah, Information Developer
May 10, 2018

This blog post was authored by Sanjay Baronia. Today, cloud infrastructure has made it easier for organizations to consume services and deploy business applications with a pay-as-you-go, OPEX model. This provides a number of incentives to move data to the cloud, especially for variable workloads and use cases that require heavy compute for finite periods...

Running an Eon Mode Database: Live in Vertica 9.1

Soniya Shah, Information Developer
May 1, 2018

This blog post was authored by Sarah Lemaire. Before now, you could only operate your Vertica database in Enterprise Mode, the traditional Vertica architecture where your data is distributed across the local nodes. Now, Vertica 9.1, released in April, 2018, allows you to operate your database in Eon Mode, which was previously released as beta...

What’s New in Vertica 9.1?

Soniya Shah, Information Developer
April 30, 2018

This blog post was authored by Soniya Shah. In Vertica 9.1 we introduce new functionality including: • Eon Mode, now available in production environments • Machine Learning Enhancements • Management Console Updates • Voltage SecureData Integration • Python UDTF • AWS Licensing Updates • Security Updates • Upgrade and Installation Changes • S3 Session Parameter...

Hierarchical Partitioning

Soniya Shah, Information Developer
April 16, 2018

This blog post was authored by Shrirang Kamat. This document demonstrates how you can use hierarchical partitions, introduced in Vertica 9.0, to solve a few example use cases. For more information, see Hierarchical Partitioning. Partitioning a table helps with managing the information life cycle. Since data for partitions is segregated into different ROS containers, predicates...