HLL_UNION_AGG
Aggregates HLL values by computing the union.
Analyze Syntax
func.hll_union_agg(get_column(table, 'hll_col'))
Analyze Examples
func.hll_union_agg(get_column(table, 'hll_col'))
┌─────────────┐
│ (hll value) │
└─────────────┘
SQL Syntax
HLL_UNION_AGG(<hll_col>)
SQL Examples
SELECT HLL_CARDINALITY(HLL_UNION_AGG(hll_col)) FROM segments;
┌──────┐
│ 8000 │
└──────┘