How To Install postgresql-hll on Ubuntu 18.04
Introduction
In this tutorial we learn how to install postgresql-hll on Ubuntu 18.04.
What is postgresql-hll
postgresql-hll is:
This Postgres module introduces a new data type
hllwhich is a HyperLogLog data structure. HyperLogLog is a fixed-size, set-like structure used for distinct value counting with tunable precision. For example, in 1280 byteshllcan estimate the count of tens of billions of distinct values with only a few percent error.
In addition to the algorithm proposed in the original paper, this implementation is augmented to improve its accuracy and memory use without sacrificing much speed.
The full description can be found at https://github.com/aggregateknowledge/postgresql-hll/blob/master/README.markdown
There are three methods to install postgresql-hll on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install postgresql-hll Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install postgresql-hll using apt-get by running the following command:
sudo apt-get -y install postgresql-hll
Install postgresql-hll Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install postgresql-hll using apt by running the following command:
sudo apt -y install postgresql-hll
Install postgresql-hll Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install postgresql-hll using aptitude by running the following command:
sudo aptitude -y install postgresql-hll
How To Uninstall postgresql-hll on Ubuntu 18.04
To uninstall only the postgresql-hll package we can use the following command:
sudo apt-get remove postgresql-hll
Uninstall postgresql-hll And Its Dependencies
To uninstall postgresql-hll and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove postgresql-hll
Remove postgresql-hll Configurations and Data
To remove postgresql-hll configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge postgresql-hll
Remove postgresql-hll configuration, data, and all of its dependencies
We can use the following command to remove postgresql-hll configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge postgresql-hll
References
Summary
In this tutorial we learn how to install postgresql-hll package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
