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