CARDINALITY
Returns the number of key-value pairs in a map.
Analyze Syntax
func.cardinality(get_column(table, 'map_col'))
Analyze Examples
func.cardinality(MAP{'a':1,'b':2,'c':3})
┌───┐
│ 3 │
└───┘
SQL Syntax
CARDINALITY(<map_col>)
SQL Examples
SELECT CARDINALITY(MAP{'a':1, 'b':2, 'c':3});
┌───┐
│ 3 │
└───┘