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  1. MariaDB Server
  2. MDEV-11437

JSON_QUOTE function does not quote and uses wrong character set

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.2(EOL)
    • 10.2.3
    • JSON

    Description

      Function JSON_QUOTE is specified in MySQL manual as

      Quotes a string as a JSON value by wrapping it with double quote characters and escaping interior quote and other characters, then returning the result as a utf8mb4 string.

      It works in MySQL according to this specification:

      +-------------------+
      		 
      | JSON_QUOTE('foo') |
      		 
      +-------------------+
      		 
      | "foo"             |
      		 
      +-------------------+
      		 
      1 row in set (0.00 sec)
      		 
       
      		 
      MySQL [test]> CREATE TABLE t AS SELECT JSON_QUOTE('foo');
      		 
      Query OK, 1 row affected (0.48 sec)
      		 
      Records: 1  Duplicates: 0  Warnings: 0
      		 
       
      		 
      MySQL [test]> SHOW CREATE TABLE t \G
      		 
      *************************** 1. row ***************************
      		 
             Table: t
      		 
      Create Table: CREATE TABLE `t` (
      		 
        `JSON_QUOTE('foo')` varchar(56) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1
      		 
      1 row in set (0.00 sec)

      However, in MariaDB it neither wraps the value in double quote marks, nor does it return result in utf8mb4

      +-------------------+
      		 
      | JSON_QUOTE('foo') |
      		 
      +-------------------+
      		 
      | foo               |
      		 
      +-------------------+
      		 
      1 row in set (0.00 sec)
      		 
       
      		 
      MariaDB [test]> CREATE TABLE t SELECT JSON_QUOTE('foo');
      		 
      Query OK, 1 row affected (0.49 sec)
      		 
      Records: 1  Duplicates: 0  Warnings: 0
      		 
       
      		 
      MariaDB [test]> SHOW CREATE TABLE t \G
      		 
      *************************** 1. row ***************************
      		 
             Table: t
      		 
      Create Table: CREATE TABLE `t` (
      		 
        `JSON_QUOTE('foo')` varchar(36) CHARACTER SET utf8 NOT NULL
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1
      		 
      1 row in set (0.00 sec)

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        Issue Links

          relates to

          Task - A task that needs to be done. MDEV-9143 JSON_xxx functions

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Activity

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              holyfoot Alexey Botchkov
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:
                Resolved:

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