bitmap_empty
Description
Returns an empty bitmap. It is mainly used to fill in the default value during insert or stream load. For example:
cat data | curl --location-trusted -u user:passwd -T - \
-H "columns: dt,page,v1,v2=bitmap_empty()" \
http://host:8410/api/test/testDb/_stream_load
Syntax
BITMAP BITMAP_EMPTY()
Examples
MySQL > select bitmap_count(bitmap_empty());
+------------------------------+
| bitmap_count(bitmap_empty()) |
+------------------------------+
| 0 |
+------------------------------+
keyword
BITMAP_EMPTY,BITMAP