bitmap_to_array

bitmap_to_array

description

Syntax

ARRAY_BIGINT bitmap_to_array(BITMAP input)

将一个bitmap转化成一个array 数组。 输入是null的话会返回null。

example

mysql> select bitmap_to_array(null);
+------------------------+
| bitmap_to_array(NULL)  |
+------------------------+
| NULL                   |
+------------------------+

mysql> select bitmap_to_array(bitmap_empty());
+---------------------------------+
| bitmap_to_array(bitmap_empty()) |
+---------------------------------+
| []                              |
+---------------------------------+

mysql> select bitmap_to_array(to_bitmap(1));
+-------------------------------+
| bitmap_to_array(to_bitmap(1)) |
+-------------------------------+
| [1]                           |
+-------------------------------+

mysql> select bitmap_to_array(bitmap_from_string('1,2,3,4,5'));
+--------------------------------------------------+
| bitmap_to_array(bitmap_from_string('1,2,3,4,5')) |
+--------------------------------------------------+
| [1, 2, 3, 4, 5]                                  |
+--------------------------------------------------

keywords

BITMAP_TO_ARRAY,BITMAP