bitmap_count

description

Syntax

BITMAP BITMAP_COUNT(BITMAP lhs)

Returns the number of input bitmaps。

example

1. mysql> select bitmap_count(to_bitmap(1)) cnt;
2. +------+
3. | cnt  |
4. +------+
5. |    1 |
6. +------+

8. mysql> select bitmap_count(bitmap_and(to_bitmap(1), to_bitmap(1))) cnt;
9. +------+
10. | cnt  |
11. +------+
12. |    1 |
13. +------+

keywords

1. BITMAP_COUNT