BITMAP_EMPTY
bitmap_empty
description
Syntax
BITMAP BITMAP_EMPTY()
Return an empty bitmap. Mainly be used to supply default value for bitmap column when loading, e.g.,
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
example
mysql> select bitmap_count(bitmap_empty());
+------------------------------+
| bitmap_count(bitmap_empty()) |
+------------------------------+
| 0 |
+------------------------------+
mysql> select bitmap_to_string(bitmap_empty());
+----------------------------------+
| bitmap_to_string(bitmap_empty()) |
+----------------------------------+
| |
+----------------------------------+
keywords
BITMAP_EMPTY,BITMAP