📄️ hll_cardinality
Calculates the cardinality of a single HLL type value.
📄️ hll_empty
Generates an empty HLL column to supplement the default values when inserting or loading data.
📄️ hll_hash
Converts a value to an hll type. Typically used in imports to map a value in the source data to an HLL column type in the StarRocks table.