bitmap_has_any

description

Syntax

B00LEAN BITMAP_HAS_ANY(BITMAP lhs, BITMAP rhs)

计算两个Bitmap列是否存在相交元素,返回值是Boolean值.

example

MySQL > select bitmap_has_any(to_bitmap(1),to_bitmap(2)) cnt;
+------+
| cnt  |
+------+
|    0 |
+------+

MySQL > select bitmap_has_any(to_bitmap(1),to_bitmap(1)) cnt;
+------+
| cnt  |
+------+
|    1 |
+------+

keyword

BITMAP_HAS_ANY,BITMAP