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  1. MariaDB Server
  2. MDEV-24616

JSON_EXTRACT produces incorrect result for double wildcard

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Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5(EOL), 12.3
    • 10.11, 11.4, 11.8
    • JSON
    • None

    Description

      Consider this example:

       
      		 
      set @json=
      		 
      '{
      		 
        "range_scan_alternatives":  {
      		 
          "ranges": [ "(1) <= (kp1) <= (1)",
      		 
                      "(2) <= (kp1) <= (2)" ],
      		 
          "aaa":"bbb"
      		 
        }
      		 
      }';
      		 
      select json_valid(@json);
      		 
      select json_extract(@json, '$**.range_scan_alternatives**.ranges');

      On MariaDB, it produces:

      MariaDB [test]> select json_extract(@json, '$**.range_scan_alternatives**.ranges');
      		 
      +-------------------------------------------------------------+
      		 
      | json_extract(@json, '$**.range_scan_alternatives**.ranges') |
      		 
      +-------------------------------------------------------------+
      		 
      | NULL                                                        |
      		 
      +-------------------------------------------------------------+

      I think the correct result should be what MySQL-8 produces:

      mysql> select json_extract(@json, '$**.range_scan_alternatives**.ranges');
      		 
      +-------------------------------------------------------------+
      		 
      | json_extract(@json, '$**.range_scan_alternatives**.ranges') |
      		 
      +-------------------------------------------------------------+
      		 
      | [["(1) <= (kp1) <= (1)", "(2) <= (kp1) <= (2)"]]            |
      		 
      +-------------------------------------------------------------+

      Attachments

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15322 JSON_VALUE and JSON_QUERY don't handle wildcards in path

          • Major - Major loss of function.
          • Confirmed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24259 JSON_EXTRACT returns wrong result with **

          • Major - Major loss of function.
          • Confirmed

          Activity

            People

              rucha174 Rucha Deodhar
              psergei Sergei Petrunia
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              Dates

                Created:
                Updated:

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