BITMAP_FROM_BASE64

bitmap_from_base64

description

Syntax

BITMAP BITMAP_FROM_BASE64(VARCHAR input)

将一个base64字符串(bitmap_to_base64函数的结果)转化为一个BITMAP。当输入字符串不合法时，返回NULL。

example

mysql> select bitmap_to_string(bitmap_from_base64("AA=="));
+----------------------------------------------+
| bitmap_to_string(bitmap_from_base64("AA==")) |
+----------------------------------------------+
|                                              |
+----------------------------------------------+

mysql> select bitmap_to_string(bitmap_from_base64("AQEAAAA="));
+-----------------------------------+
| bitmap_to_string(bitmap_from_base64("AQEAAAA=")) |
+-----------------------------------+
| 1                                 |
+-----------------------------------+

mysql> select bitmap_to_string(bitmap_from_base64("AjowAAACAAAAAAAAAJgAAAAYAAAAGgAAAAEAf5Y="));
+----------------------------------------------------------------------------------+
| bitmap_to_string(bitmap_from_base64("AjowAAACAAAAAAAAAJgAAAAYAAAAGgAAAAEAf5Y=")) |
+----------------------------------------------------------------------------------+
| 1,9999999                                                                        |
+----------------------------------------------------------------------------------+

keywords

BITMAP_FROM_BASE64,BITMAP