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  1. MariaDB Server
  2. MDEV-17121

JSON_ARRAY_APPEND

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.3.9, 10.2(EOL), 10.3(EOL)
    • 10.2.18
    • JSON
    • None
    • Ubuntu 18.04

    Description

      CREATE TEMPORARY TABLE a (
      		 
        `data` mediumtext DEFAULT NULL
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
      		 
       
      		 
      INSERT INTO a VALUES ('{}');
      		 
       
      		 
      UPDATE a SET 
        data = JSON_INSERT(data, '$.messages', JSON_QUERY('[]', '$')) ,
      		 
        data = JSON_ARRAY_APPEND(data, '$.messages', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$'));
      		 
       
      		 
      -- Error (4038): Syntax error in JSON text in argument 1 to function 'json_array_append' at position 15
      		 
       
      		 
      -- BUT, If in "JSON_QUERY('[]', '$'))" array is not empty:
      		 
       
      		 
      UPDATE a SET 
        data = JSON_INSERT(data, '$.messages', JSON_QUERY('["AAAAA"]', '$')) ,
      		 
        data = JSON_ARRAY_APPEND(data, '$.messages', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$'));
      		 
       
      		 
      -- Not errors

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-17001 JSON_MERGE returns nullwhen merging empty array

          • Major - Major loss of function.
          • Closed

          Activity

            Ascending order - Click to sort in descending order
            alice Alice Sherepa added a comment -

            Thanks for the report!
            reproduced as described on MariaDB 10.2, 10.3

            MariaDB [test]> select JSON_ARRAY_APPEND('{"a": []}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) ;
            		 
            +--------------------------------------------------------------------------------------------------+
            		 
            | JSON_ARRAY_APPEND('{"a": []}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) |
            		 
            +--------------------------------------------------------------------------------------------------+
            		 
            | NULL                                                                                             |
            		 
            +--------------------------------------------------------------------------------------------------+
            		 
            1 row in set, 1 warning (0.000 sec)
            		 
             
            		 
            Warning (Code 4038): Syntax error in JSON text in argument 1 to function 'json_array_append' at position 8
            		 
            MariaDB [test]> select JSON_ARRAY_APPEND('{"a": [{}]}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) ;
            		 
            +----------------------------------------------------------------------------------------------------+
            		 
            | JSON_ARRAY_APPEND('{"a": [{}]}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) |
            		 
            +----------------------------------------------------------------------------------------------------+
            		 
            | {"a": [{}, {"date": "2018-09-03", "text": "mmmmmmm"}]}                                             |
            		 
            +----------------------------------------------------------------------------------------------------+
            		 
            1 row in set (0.000 sec)

            alice Alice Sherepa added a comment - Thanks for the report! reproduced as described on MariaDB 10.2, 10.3 MariaDB [test]> select JSON_ARRAY_APPEND('{"a": []}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) ; +--------------------------------------------------------------------------------------------------+ | JSON_ARRAY_APPEND('{"a": []}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) | +--------------------------------------------------------------------------------------------------+ | NULL | +--------------------------------------------------------------------------------------------------+ 1 row in set, 1 warning (0.000 sec)   Warning (Code 4038): Syntax error in JSON text in argument 1 to function 'json_array_append' at position 8 MariaDB [test]> select JSON_ARRAY_APPEND('{"a": [{}]}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) ; +----------------------------------------------------------------------------------------------------+ | JSON_ARRAY_APPEND('{"a": [{}]}', '$.a', JSON_QUERY('{"date":"2018-09-03","text":"mmmmmmm"}', '$')) | +----------------------------------------------------------------------------------------------------+ | {"a": [{}, {"date": "2018-09-03", "text": "mmmmmmm"}]} | +----------------------------------------------------------------------------------------------------+ 1 row in set (0.000 sec)
            holyfoot Alexey Botchkov added a comment -

            http://lists.askmonty.org/pipermail/commits/2018-September/012907.html

            holyfoot Alexey Botchkov added a comment - http://lists.askmonty.org/pipermail/commits/2018-September/012907.html

            People

              holyfoot Alexey Botchkov
              alekseymvt Aleksey M.
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              Dates

                Created:
                Updated:
                Resolved:

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