DS_HLL_COMBINE (Lakehouse v2)

Combina vários sketches HLL do DataSketches num único sketch.

Sintaxe do Analyze

func.ds_hll_combine(get_column(table, 'hll_sketch'))

Exemplos do Analyze

func.ds_hll_combine(get_column(table, 'hll_sketch'))

┌───────────────────┐
│ (combined sketch) │
└───────────────────┘

Sintaxe SQL

DS_HLL_COMBINE(<sketch_column>)

Exemplos de SQL

SELECT DS_HLL_ESTIMATE(DS_HLL_COMBINE(sketch_col)) FROM daily_sketches;

┌───────┐
│ 25000 │
└───────┘