DS_HLL_ACCUMULATE
Accumulates values into a DataSketches HLL sketch for approximate distinct counting.
Analyze Syntax
func.ds_hll_accumulate(get_column(table, 'user_id'))
Analyze Examples
func.ds_hll_accumulate(get_column(table, 'user_id'))
┌──────────────┐
│ (hll sketch) │
└──────────────┘
SQL Syntax
DS_HLL_ACCUMULATE(<expr>)
SQL Examples
SELECT DS_HLL_ESTIMATE(DS_HLL_ACCUMULATE(user_id)) FROM visits;
┌──────┐
│ 9856 │
└──────┘