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  1. MariaDB ColumnStore
  2. MCOL-6150

QA returns incorrect results when number of buckets in statistics > MaxParallelFactor constant

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    • 2025-7

    Description

      Consider the example.

      set histogram_size=52;
      ANALYZE TABLE lineitem PERSISTENT FOR COLUMNS(l_orderkey) INDEXES();
      

      And then run TPC-H Q1 using any Scale Factor. QA if used delivers incorrect results.
      Presumably logic that merges neighbor ranges calculates incorrect bounds.

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            leonid.fedorov Leonid Fedorov
            drrtuy Roman
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