GROUP_BITMAP_XOR

Description

Mainly used to merge the values of multiple bitmaps and perform bitwise xor calculations on the results.

Syntax

GROUP_BITMAP_XOR(<expr>)

Parameters

Parameter	Description
<expr>	Supported bitmap data types

Return Value

The data type of the return value is BITMAP.

Example

 select page, bitmap_to_string(user_id) from pv_bitmap;

+------+-----------------------------+
| page | bitmap_to_string(`user_id`) |
+------+-----------------------------+
| m    | 4,7,8                       |
| m    | 1,3,6,15                    |
| m    | 4,7                         |
+------+-----------------------------+

select page, bitmap_to_string(group_bitmap_xor(user_id)) from pv_bitmap group by page;

+------+-----------------------------------------------+
| page | bitmap_to_string(group_bitmap_xor(`user_id`)) |
+------+-----------------------------------------------+
| m    | 1,3,6,8,15                                    |
+------+-----------------------------------------------+