bitmap_has_any

bitmap_has_any

description

Syntax

BOOLEAN 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));
+--------------------------------------------+
| bitmap_has_any(to_bitmap(1), to_bitmap(2)) |
+--------------------------------------------+
|                                          0 |
+--------------------------------------------+

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

keywords

BITMAP_HAS_ANY,BITMAP