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  1. MariaDB Server
  2. MDEV-25139

JSON_TABLE: Non-descriptive ER_PARSE_ERROR error upon a missing alias

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: N/A
    • Fix Version/s: 10.6.0
    • Component/s: JSON, Parser
    • Labels:
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      Description

      Upon a missing mandatory JSON table alias, MariaDB produces the generic syntax error ER_PARSE_ERROR:

      bb-10.6-mdev17399-psergey2 8b533cc1d5

      MariaDB [db]> select * from json_table('[]', '$' COLUMNS(x FOR ORDINALITY));
      ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
      

      while MySQL returns a nicer context-specific error:

      MySQL 8.0.23

      MySQL [db]> select * from json_table('[]', '$' COLUMNS(x FOR ORDINALITY));
      ERROR 3667 (42000): Every table function must have an alias
      

      It is a cosmetic problem, but deep within a more complicated query it can become confusing.

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              Assignee:
              holyfoot Alexey Botchkov
              Reporter:
              elenst Elena Stepanova
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                Updated:
                Resolved: