Approximation Statistics
Data scientists frequently want to find anomalies in numerical data. To that end, HCP has some simple approximation statistics.
Function  Description  Input  Returns 

HLLP_ADD  Add value to the HyperLogLogPlus estimator set. 

The HyperLogLogPlus set with a new value added 
HLLP_CARDINALITY  Returns HyperLogLogPlusestimated cardinality for this set. 

Long value representing the cardinality for this set 
HLLP_INIT  Initializes the HyperLogLogPlus estimator set. p must be a value between 4 and sp and sp must be less than 32 and greater than 4. 

A new HyperLogLogPlus set 
HLLP_MERGE  Merge hllp sets together. The resulting estimator is initialized with p and sp precision values from the first provided hllp estimator set. 

True if the filter might contain the value and false otherwise 