fpompermaier commented on issue #9392: [FLINK-13611] [table-planner-blink] 
Introduce statistic generator utility to generate table & column statistics
URL: https://github.com/apache/flink/pull/9392#issuecomment-519412311
 
 
   I also tried to write something like that and the problem I had was that the 
computatio of column stats, if computed independently, is not so efficient (all 
the values of a column is read by every stat function while you could just read 
the values once and compute all the statistics in one big function).
   For more details about our test implementation look at 
https://github.com/okkam-it/flink-descriptive-stats/blob/master/src/main/java/jar/ProfileJob.java

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