bitmap_union_int
Description
Count the number of different values in columns of type TINYINT, SMALLINT and INT, return the sum of COUNT (DISTINCT expr) same.
Syntax
BIGINT bitmap_union_int(expr)
Parameters
expr
: column expression. The supported column type is TINYINT, SMALLINT and INT.
Return value
Returns a value of the BIGINT type.
Examples
mysql> select bitmap_union_int(k1) from tbl1;
+------------------------+
| bitmap_union_int(`k1`) |
+------------------------+
| 2 |
+------------------------+