Changing the Default Database Time Zone

Sarah Lemaire, Manager, Vertica Documentation
July 18, 2018

Jim Knicely authored this tip. When you first install Vertica, the default database time zone is controlled by the TZ environment variable. If TZ is undefined, Vertica uses the operating system time zone. You can change the default database time zone later by altering the value of the TZ environment variable or the operating system...

Vertica Quick Tip: Keepalive settings for AWS Network Load Balancer

Phil Molea, Sr. Information Developer, Vertica
July 18, 2018

Serge Bonte authored this post. Network Load Balancers are one of the three types of load balancers supported by Amazon’s Elastic Load Balancing. See: https://docs.aws.amazon.com/elasticloadbalancing/latest/network/introduction.html Since load balancers act as a proxy between clients (such as JDBC) and Vertica servers, it is important to understand how AWS’s NLB handle idle timeouts for connections. The idle...
House diagram showing sensors for lights, weather, security, internal temp, etc.

The Internet of Things (IoT) and Smart Metering

Joy King, VP Product & GTM Strategy, Vertica
July 17, 2018

Every month, my husband receives a driver’s report from Chevrolet, providing him with “feedback” on his driving behavior – everything from the intensity of his braking to the number of lane changes without a blinker to the distance and speed he drove in his Silverado truck. The report also provides specific details on the upcoming...

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Counting Days, Week Days and Weekend Days Across the Years: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
July 17, 2018

Jim Knicely authored this post. By combing Vertica’s built-in date formatting functions and the TIMESERIES clause, it’s easy to find the total number of days, total number of week days (Monday - Friday), and the total number of weekend days (Saturday - Sunday) that occur within a multi-year range (i.e., 2016 - 2018), including Leap...

Synonyms: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
July 16, 2018

Jim Knicely authored this post. A synonym in Oracle is an alternative name for a database object (i.e., table, view, sequence, etc.). Synonyms work great when you want to point a user to a specify schema when a schema is not specified in a query. Although synonyms are not used in Vertica, you can instead...

Average Date: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
July 12, 2018

Jim Knicely authored this tip. Given a list of dates, how do I find the “average” date? Like this… dbadmin=> SELECT AVG(JULIAN_DAY(mydate)) + '4714-11-24 BC'::DATE avg_date dbadmin-> FROM dates; avg_date --------------------- 2018-07-11 00:00:00 (1 row) Have fun!

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The Case of Object Names: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
July 11, 2018

Jim Knicely authored this tip. When creating objects in Vertica (i.e., tables), Vertica preserves the “case” of the object name in the catalog meta-data exactly as you ask. dbadmin=> SELECT table_name FROM tables WHERE table_name ILIKE '%lower_case%'; table_name ------------ lower_case (1 row) dbadmin=> DROP TABLE lower_case; DROP TABLE dbadmin=> CREATE TABLE LOWER_CASE (c1 INT); CREATE...
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Using Java UDX in Vertica

Soniya Shah, Information Developer
July 9, 2018

Michael Flower authored this post. Introduction Vertica has a highly extensible UDx framework, which allows external user-defined functions, parsers and data loaders to be installed onto the Vertica server. This means that a routine written in C++, R, Java or Python can be run in-database as a Vertica SQL function. This blog is based on...

DataGals, Colin, Meg, and Micro Focus

Soniya Shah, Information Developer
July 3, 2018

Crystal North authored this post. What is Inclusion & Diversity? What is an ERG? Those questions are asked often and I am beyond excited to answer them. Inclusion & Diversity are what fuels any sort of growth in any capacity. From family, to friends, to education, to community, to company, to organization, etc etc etc,...

Cerner Wins TDWI Best Practices Award

Phil Molea, Sr. Information Developer, Vertica
July 2, 2018

Steve Sarsfield authored this post. It’s amazing to see our customers ‘crush it’ when it comes to their implementation and best practices industry awards. That’s why I was so happy to hear that Cerner, a long-time Vertica customer, is the recipient of TDWI’s Best practices award for data warehouse. I want to congratulate Cerner on...