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Sarah Lemaire

Manager, Vertica Documentation

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Which One of these Nodes Doesn’t Belong? A Vertica Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 13, 2018

Jim Knicely wrote this tip. We strongly recommend that you use a homogeneous hardware configuration for your Vertica cluster: Each node of the cluster should be similar in CPU, clock speed, number of cores, memory, and operating system version. We learned in the last Vertica Quick Tip that the V_CATALOG.HOST_RESOURCES system table provides a snapshot...

Getting your Node Hardware Specs: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 12, 2018

Jim Knicely wrote this tip. At some point in the future, you might not remember the number of CPU sockets/processor cores and the amount of memory on each node of your Vertica cluster. Instead of having to issue several Linux commands on each node, Vertica provides the V_CATALOG.HOST_RESOURCES system table, which provides a snapshot of...
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SQL Reserved Words: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 11, 2018

Jim Knicely authored this tip. Keywords are words that have a specific meaning in the SQL language. Every SQL statement contains one or more keywords. Many keywords are also reserved words. Vertica recommends that you not use reserved words as names for objects, or as identifiers. Including reserved words can make your SQL statements confusing....

Vertica’s Kathy Taylor is Honored by the Carroll Center for the Blind

Sarah Lemaire, Manager, Vertica Documentation
June 8, 2018

  Positive attitude   Education   Passion   Determination   Teamwork   According to Jay Blake, founder of Follow a Dream auto racing, those are the tools you need to overcome obstacles and be successful. More on that later. On June 7, The Carroll Center for the Blind inducted Micro Focus’s own Kathy Taylor into...

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...
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Loading Negative (BC) Dates: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 7, 2018

Jim Knicely authored this tip. I was asked recently how to load a negative date (one representing a BC date) into Vertica. Although negative dates are not valid in Vertica, the FILLER parameter of the COPY command can be used to load them. dbadmin=> \! cat /home/dbadmin/date.txt -4712-01-01 00:00:00 dbadmin=> COPY public.test FROM '/home/dbadmin/date.txt' REJECTED...

Superfast Table Copy (Revisited): Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 6, 2018

Jim Knicely authored this tip. You learned from a Vertica Quick Tip back on 02/07/2018 that Vertica has the lightweight, in-memory COPY_TABLE function. This awesome function lets us copy huge tables in less than a second. I wanted to revisit this awesome feature to point out that when using the COPY_TABLE command, if the target...

Handling OLE DB Square Brackets: Quick Tip

Sarah Lemaire, Manager, Vertica Documentation
June 5, 2018

Jim Knicely authored this blog. Many Microsoft products, including SSAS, can connect to Vertica using the Vertica OLE DB driver for Windows which is installed as part of the Client Drivers and Tools for Windows. Unfortunately tools like MS SSAS can include square brackets to qualify identifiers in the queries it generates to run in...

Vertica Quick Tip: Monitoring Changes to Configuration Parameters

Sarah Lemaire, Manager, Vertica Documentation
June 4, 2018

Jim Knicely authored this tip. The CONFIGURATION_CHANGES system table records the change history of system configuration parameters. This information is useful for identifying: • Who changed the configuration parameter value • When the configuration parameter was changed • Whether nonstandard settings were in effect in the past dbadmin=> SELECT event_timestamp, user_name, parameter, value FROM configuration_changes...
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IMPORTANT: Vertica and Amazon Linux 2.0 gcc Compatibility Problems

Sarah Lemaire, Manager, Vertica Documentation
May 31, 2018

This blog post was authored by Monica Cellio, with Serge Bonte. The Vertica binaries are compiled using the default version of g++ installed on the supported Linux platforms. Vertica requires a minimum of gcc version 4.8.4. The default version of g++ on Amazon Linux 2.0 is not compatible with gcc 4.8.4. To be able to...