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  1. MariaDB Server
  2. MDEV-11858

json_merge() concatenates instead of merging

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.2
    • 10.2.4
    • JSON

    Description

      I am not sure where to refer what "json merge" means formally, but looking in several places makes me think that current 10.2 behavior is incorrect :

      MariaDB [test]> select json_merge('{"a":"b"}', '{"a":"c"}') ;
      | {"a":"b", "a":"c"}                   |
      

      While both http://tools.knowledgewalls.com/onlinejsonmerger and MySQL 5.7 show:

      mysql > select json_merge('{"a":"b"}', '{"a":"c"}') ;
      | {"a": ["b", "c"]}                    |
      

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            holyfoot Alexey Botchkov
            anikitin Andrii Nikitin (Inactive)
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              Updated:
              Resolved:

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