ccaa97a5ac
This CL make bitmap_count, bitmap_union, and bitmap_union_count accept any expression whose return type is bitmap as input so that we can support flexible bitmap expression such as bitmap_count(bitmap_and(to_bitmap(1), to_bitmap(2))). This CL also create separate documentation for each bitmap UDF to conform with other functions.
1.4 KiB
1.4 KiB
to_bitmap
description
Syntax
BITMAP TO_BITMAP(expr)
输入为取值在 0 ~ 4294967295 区间的 unsigned int ，输出为包含该元素的bitmap。 该函数主要用于stream load任务将整型字段导入Doris表的bitmap字段。例如
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_load
example
mysql> select bitmap_count(to_bitmap(10));
+-----------------------------+
| bitmap_count(to_bitmap(10)) |
+-----------------------------+
| 1 |
+-----------------------------+
keyword
TO_BITMAP,BITMAP