kangkaisen opened a new pull request #2418: Add  intersect_count UDAF
URL: https://github.com/apache/incubator-doris/pull/2418
 
 
   For https://github.com/apache/incubator-doris/issues/2417 and 
https://github.com/apache/incubator-doris/issues/2416
   
   1 Because we don't support array type currently, so I use variable arguments 
instead.
   
   2 `intersect_count` directly  return final count, not bitmap like 
bitmap_union, because intersect_count return bitmap is more complex and need 
more serialize.  If we really need bitmap format from intersect_count, we could 
do that in another PR and which won't have compatibility problems.

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