HLL_CARDINALITY
description
Syntax
HLL_CARDINALITY(hll)
HLL_CARDINALITY is used to calculate the cardinality of a single HLL type value.
example
MySQL > select HLL_CARDINALITY(uv_set) from test_uv;
+---------------------------+
| hll_cardinality(`uv_set`) |
+---------------------------+
| 3 |
+---------------------------+keywords
HLL,HLL_CARDINALITY