[GitHub] [datasketches-java] zhuwenzhuang commented on issue #446: Sketches for Histogram and NDV

["zhuwenzhuang (via GitHub)" <gi...@apache.org>]

zhuwenzhuang commented on issue #446:
URL: https://github.com/apache/datasketches-java/issues/446#issuecomment-1583818480

   > 
   
   Thanks !
   I'm trying 
   1. (first table scan) percentile_approx for bin's bound_array
   2.(second table scan) array_lower_bound_index(bound_array, data_col) for data_col's bin id and data_col pair
   3.(from on second step result) compute ndv,min,max,cnt for data_col group by bin id,
   


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