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  1. MariaDB Server
  2. MDEV-26711

JSON histograms become invalid due to not properly quoted values

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: N/A
    • Fix Version/s: 10.7.1
    • Component/s: Optimizer
    • Labels:
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      Description

      JSON histograms turn out invalid if a column value contains, for example, a double quote mark.

      create or replace table t (a varchar(32));
      insert into t values ('this is "quoted" text');
      set histogram_type= JSON_HB;
      analyze table t persistent for all;
      select * from t where a = 'foo';
       
      # Cleanup
      drop table t;
      

      preview-10.7-MDEV-26519-json-histograms da8bb4b4703

      MariaDB [test]> select * from t where a = 'foo';
      ERROR 4183 (HY000): Failed to parse histogram: Root JSON element must be a JSON object at offset 0.
      

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              Assignee:
              psergei Sergei Petrunia
              Reporter:
              elenst Elena Stepanova
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                Updated:
                Resolved:

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