hll_cardinality

docs/en/sql-reference/sql-functions/scalar-functions/hll_cardinality.md

4.1.0391 B

hll_cardinality

Calculates the cardinality of a single HLL type value.

Syntax

Haskell

HLL_CARDINALITY(hll)

Examples

plain

MySQL > select HLL_CARDINALITY(uv_set) from test_uv;
+---------------------------+
| hll_cardinality(`uv_set`) |
+---------------------------+
|                         3 |
+---------------------------+

keyword

HLL,HLL_CARDINALITY