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Version: Stable-3.1

bitmap_count

Description​

Returns the 1-bit count for the input bitmap.

Syntax​

INT BITMAP_COUNT(any_bitmap)

Examples​

MySQL > select bitmap_count(bitmap_from_string("1,2,4"));
+-------------------------------------------+
| bitmap_count(bitmap_from_string('1,2,4')) |
+-------------------------------------------+
|                                         3 |
+-------------------------------------------+

MySQL > select bitmap_count(NULL);
+--------------------+
| bitmap_count(NULL) |
+--------------------+
|                  0 |
+--------------------+

keyword​

BITMAP,BITMAP_COUNT