postgresql-hll

The postgresql-hll module provides native HyperLogLog data types and relation functions, operators, and aggregates.

The LightDB-A Database postgresql-hll module is equivalent to version 2.16 of the postgresql-hll used with PostgreSQL. There are no LightDB-A Database or MPP-specific considerations for the module.

Installing and Registering the Module

The postgresql-hll module is installed when you install LightDB-A Database. Before you can use the data types defined in the module, you must register the hll extension in each database in which you want to use the types:

CREATE EXTENSION hll;

Refer to Installing Additional Supplied Modules for more information.

Module Documentation

Refer to the postgresql-hll github documentation for detailed information about using the module.