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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 |
+------------------------+