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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/08/11 07:01:37 UTC

[GitHub] [incubator-doris] liutang123 commented on pull request #4201: Rewrite count(distinct if(bool, bitmap, null)) to bitmap_union_count

liutang123 commented on pull request #4201:
URL: https://github.com/apache/incubator-doris/pull/4201#issuecomment-671767513


   > nullif, ifnull, coalesce function should also update.
   
   Add ifnull(bitmap, bitmap) and coalesce(bitmap,...).
   
   For `nullif(bitmap, bitmap)`, I can not think of comparing two bitmaps.


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