Vertica Blog

Vertica Blog

time

Checklist for Inconsistent Execution Time of Same Query in Eon Mode

Sruthi Anumula, Senior Database Support Engineer
September 6, 2023

In Eon Mode, when a query is executed and if the ROS containers associated to the tables in the query are not present in depot, it will fetch results from the communal storage bucket. In the next immediate run, the query should provide results to the user from the files present in the depot. However,...

How to Quickly Install Vertica on Large Clusters

Sruthi Anumula, Senior Database Support Engineer
December 19, 2022

Vertica 12.0.2 introduces a new feature that allows you to install Vertica in parallel on all hosts rather than one at a time as in earlier releases. This reduces the installation time in large clusters. To use this feature, run the --parallel-no-prompts flag with the install_vertica command. This flag can be used only when passwordless...

It’s All About Timing

Sarah Lemaire, Manager, Vertica Documentation
March 15, 2016

Every so often we hear about the seemingly confusing nature of SQL functions that return the “current” time. But what is “current”? Is it the start time of a transaction or statement? Is it the time returned by the system clock? The answer is: all of these, depending on which function you call.

Time Series Analytics: The Hunt for “Missing Link” in Data

Sarah Lemaire, Manager, Vertica Documentation
May 12, 2015

Time series analytics is a little-known, but very powerful Vertica tool. In Vertica, the TIMESERIES clause and time series aggregate functions normalize data into time slices. Then they interpolate missing values that fill in the gaps.Using time series analytics is useful when you want to analyze discrete data collected over time, such as stock market...