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  1. MariaDB Server
  2. MDEV-34173

Some JSON functions print the output as NULL/incorrect when character-sets is set with mbminlen > 1

Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.4(EOL), 10.5, 10.6, 10.11, 11.0(EOL), 11.1(EOL), 11.2(EOL), 11.3(EOL), 11.4, 11.5(EOL)
    • 10.5, 10.6, 10.11, 11.4
    • JSON
    • None

    Description

      JSON_EXTRACT function prints the output as NULL when setting character sets with mbminlen > 1

      Character sets with mbminlen > 1

      11.5.0-dbg>set character_set_connection=ucs2;
      		 
      Query OK, 0 rows affected (0.000 sec)

      Actual result

      11.5.0-dbg>SELECT JSON_EXTRACT('{"a": 1,"b": 2}','$.a');
      		 
      +---------------------------------------+
      		 
      | JSON_EXTRACT('{"a": 1,"b": 2}','$.a') |
      		 
      +---------------------------------------+
      		 
      | NULL                                  |
      		 
      +---------------------------------------+
      		 
      1 row in set, 1 warning (0.000 sec)
      		 
       
      		 
      11.5.0-dbg>

      Expected result

      11.5.0-dbg>SELECT JSON_EXTRACT('{"a": 1,"b": 2}','$.a');
      		 
      +---------------------------------------+
      		 
      | JSON_EXTRACT('{"a": 1,"b": 2}','$.a') |
      		 
      +---------------------------------------+
      		 
      | 1                                     |
      		 
      +---------------------------------------+
      		 
      1 row in set (0.000 sec)
      		 
       
      		 
      11.5.0-dbg>

      Character sets with mbminlen = 1

      11.5.0-dbg>set character_set_connection=utf8;
      		 
      Query OK, 0 rows affected (0.000 sec)
      		 
       
      		 
      11.5.0-dbg>SELECT JSON_EXTRACT('{"a": 1,"b": 2}','$.a');
      		 
      +---------------------------------------+
      		 
      | JSON_EXTRACT('{"a": 1,"b": 2}','$.a') |
      		 
      +---------------------------------------+
      		 
      | 1                                     |
      		 
      +---------------------------------------+
      		 
      1 row in set (0.000 sec)
      		 
       
      		 
      11.5.0-dbg>

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34143 Server crashes when executing JSON_EXTRACT after setting non-default collation_connection

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            Ascending order - Click to sort in descending order
            ramesh Ramesh Sivaraman created issue -
            ramesh Ramesh Sivaraman made changes -
            Field Original Value New Value
            Summary JSON_EXTRACT function prints the output as NULL when setting character sets with mbminlen > 1 Some JSON functions print the output as NULL/incorrect when character-sets is set with mbminlen > 1
            ramesh Ramesh Sivaraman made changes -
            Assignee Rucha Deodhar [ rucha174 ] Alexey Botchkov [ holyfoot ]
            julien.fritsch Julien Fritsch made changes -
            Fix Version/s 11.3 [ 28565 ]
            rucha174 Rucha Deodhar made changes -
            Assignee Alexey Botchkov [ holyfoot ] Alexander Barkov [ bar ]
            rucha174 Rucha Deodhar made changes -
            julien.fritsch Julien Fritsch made changes -
            Fix Version/s 11.1 [ 28549 ]
            julien.fritsch Julien Fritsch made changes -
            Fix Version/s 11.2(EOL) [ 28603 ]

            People

              bar Alexander Barkov
              ramesh Ramesh Sivaraman
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              Dates

                Created:
                Updated:

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