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BITMAP_NOT

bitmap_not​

description​

Syntax​

BITMAP BITMAP_NOT(BITMAP lhs, BITMAP rhs)

Calculate the set after lhs minus rhs, return the new bitmap.

example​

mysql> select bitmap_to_string(bitmap_not(bitmap_from_string('2,3'),bitmap_from_string('1,2,3,4')));
+----------------------------------------------------------------------------------------+
| bitmap_to_string(bitmap_not(bitmap_from_string('2,3'), bitmap_from_string('1,2,3,4'))) |
+----------------------------------------------------------------------------------------+
| |
+----------------------------------------------------------------------------------------+

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

keywords​

BITMAP_NOT,BITMAP