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hll_cardinality

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

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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