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  1. MariaDB Server
  2. MDEV-41896

JSON_EXISTS does not see keys that the recursive ** path finds below the top level

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      Reproduced on 10.11.19 (debug build):

      SELECT JSON_EXISTS('{"a":{"c":1}}', '$**.c'),                       -- 0
      		 
             JSON_CONTAINS_PATH('{"a":{"c":1}}', 'one', '$**.c'),         -- 1
      		 
             JSON_EXTRACT('{"a":{"c":1}}', '$**.c');                      -- [1]

      JSON_EXISTS answers 0 while the other two, on the same arguments, find the key. Expected: 1.

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            rucha174 Rucha Deodhar
            chunlingqin chunlingqin
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