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