bitmap_and_not_count

bitmap_and_not_count

description

Syntax

BITMAP BITMAP_AND_NOT_COUNT(BITMAP lhs, BITMAP rhs)

将两个bitmap进行与非操作并返回计算返回的大小.

example

mysql> select bitmap_and_not_count(bitmap_from_string('1,2,3'),bitmap_from_string('3,4,5')) cnt;
+------+
| cnt  |
+------+
|    2 |
+------+

keywords

BITMAP_AND_NOT_COUNT,BITMAP