2.0 KiB
2.0 KiB
title, language
| title | language |
|---|---|
| bitmap_from_string | en |
bitmap_from_string
description
Syntax
BITMAP BITMAP_FROM_STRING(VARCHAR input)
Convert a string into a bitmap. The input string should be a comma separated UNIT32. For example: input string "0, 1, 2" will be converted to a Bitmap with bit 0, 1, 2 set. If input string is invalid, return NULL.
example
mysql> select bitmap_to_string(bitmap_empty());
+----------------------------------+
| bitmap_to_string(bitmap_empty()) |
+----------------------------------+
| |
+----------------------------------+
mysql> select bitmap_to_string(bitmap_from_string("0, 1, 2"));
+-------------------------------------------------+
| bitmap_to_string(bitmap_from_string('0, 1, 2')) |
+-------------------------------------------------+
| 0,1,2 |
+-------------------------------------------------+
mysql> select bitmap_from_string("-1, 0, 1, 2");
+-----------------------------------+
| bitmap_from_string('-1, 0, 1, 2') |
+-----------------------------------+
| NULL |
+-----------------------------------+
keyword
BITMAP_FROM_STRING,BITMAP