The postgresql-hll module provides native HyperLogLog data types and relation functions, operators, and aggregates.
The WarehousePG postgresql-hll module is equivalent to version 2.16 of the postgresql-hll used with PostgreSQL. There are no WarehousePG or MPP-specific considerations for the module.
Installing and Registering the Module
Download and install the postgresql-hll package, then register the hll extension in each database where you want to use the types:
CREATE EXTENSION hll;
Refer to Downloading and installing an extension for details.
Module Documentation
Refer to the postgresql-hll github documentation for detailed information about using the module.