to_bitmap
description
Syntax
BITMAP TO_BITMAP(expr)
Convert an unsigned bigint (ranging from 0 to 18446744073709551615) to a bitmap containing that value. Null will be return when the input value is not in this range. Mainly be used to load integer value into bitmap column, e.g.,
cat data | curl --location-trusted -u user:passwd -T - -H "columns: dt,page,user_id, user_id=to_bitmap(user_id)" http://host:8410/api/test/testDb/_stream_loadexample
mysql> select bitmap_count(to_bitmap(10));
+-----------------------------+
| bitmap_count(to_bitmap(10)) |
+-----------------------------+
| 1 |
+-----------------------------+
MySQL> select bitmap_to_string(to_bitmap(-1));
+---------------------------------+
| bitmap_to_string(to_bitmap(-1)) |
+---------------------------------+
| |
+---------------------------------+keywords
TO_BITMAP,BITMAP