[
https://issues.apache.org/jira/browse/HIVE-28528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
yongzhi.shao updated HIVE-28528:
--------------------------------
Description:
Since we have introduced roaringbitmap dependency in hive-ql module.
Can we take this opportunity to introduce bitmap related UDFs, which can be
used to quickly compute intersection and merger differences, de-duplication
statistics, and other computational needs.
If so, I can do this.
| UDF | desc | demo | result|
|:-----------------:|:-------------------------------------------------------:|:--------------------------------:|:-------------:|
| to_bitmap | Convert number (int or bigint) to bitmap | to_bitmap(num) |
bitmap |
| bitmap_union | Multiple bitmaps merged into one bitmap (concatenation) |
bitmap_union(bitmap) | bitmap |
| bitmap_count | Calculate the number of elements stored in the bitmap |
bitmap_count(bitmap) | long |
| bitmap_and | Calculate the intersection of two bitmaps |
bitmap_and(bitmap1,bitmap2) | bitmap |
| bitmap_or | Calculate the concatenation of two bitmaps |
bitmap_or(bitmap1,bitmap2) | bitmap |
| bitmap_xor | Calculate the difference between two bitmaps |
bitmap_xor(bitmap1,bitmap2) | bitmap |
| bitmap_from_array | Converting an array to a bitmap |
bitmap_from_array(array) | bitmap |
| bitmap_to_array | Convert bitmap to array | bitmap_to_array(bitmap) |
array<bigint> |
| bitmap_contains | Determine if a bitmap contains all the elements of another
bitmap. | bitmap_contains(bitmap1,bitmap2) | boolean |
| bitmap_contains | Determine if a bitmap contains an element |
bitmap_contains(bitmap,num) | boolean |
was:
Since we have introduced roaringbitmap dependency in hive-ql module.
Can we take this opportunity to introduce bitmap related UDFs, which can be
used to quickly compute intersection and merger differences, de-duplication
statistics, and other computational needs.
If so, I can do this.
> Support Bitmap function
> -----------------------
>
> Key: HIVE-28528
> URL: https://issues.apache.org/jira/browse/HIVE-28528
> Project: Hive
> Issue Type: Improvement
> Security Level: Public(Viewable by anyone)
> Components: UDF
> Affects Versions: 4.0.0
> Reporter: yongzhi.shao
> Priority: Major
>
> Since we have introduced roaringbitmap dependency in hive-ql module.
> Can we take this opportunity to introduce bitmap related UDFs, which can be
> used to quickly compute intersection and merger differences, de-duplication
> statistics, and other computational needs.
> If so, I can do this.
>
>
>
>
> | UDF | desc | demo | result|
> |:-----------------:|:-------------------------------------------------------:|:--------------------------------:|:-------------:|
> | to_bitmap | Convert number (int or bigint) to bitmap | to_bitmap(num) |
> bitmap |
> | bitmap_union | Multiple bitmaps merged into one bitmap (concatenation) |
> bitmap_union(bitmap) | bitmap |
> | bitmap_count | Calculate the number of elements stored in the bitmap |
> bitmap_count(bitmap) | long |
> | bitmap_and | Calculate the intersection of two bitmaps |
> bitmap_and(bitmap1,bitmap2) | bitmap |
> | bitmap_or | Calculate the concatenation of two bitmaps |
> bitmap_or(bitmap1,bitmap2) | bitmap |
> | bitmap_xor | Calculate the difference between two bitmaps |
> bitmap_xor(bitmap1,bitmap2) | bitmap |
> | bitmap_from_array | Converting an array to a bitmap |
> bitmap_from_array(array) | bitmap |
> | bitmap_to_array | Convert bitmap to array | bitmap_to_array(bitmap) |
> array<bigint> |
> | bitmap_contains | Determine if a bitmap contains all the elements of
> another bitmap. | bitmap_contains(bitmap1,bitmap2) | boolean |
> | bitmap_contains | Determine if a bitmap contains an element |
> bitmap_contains(bitmap,num) | boolean |
>
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
