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  1. MariaDB Server
  2. MDEV-12619

UNION creates excessive integer column types for integer literals

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.1(EOL), 10.2(EOL), 10.3(EOL)
    • 10.3.1
    • OTHER

    Description

      CREATE OR REPLACE TABLE t1 AS SELECT 1;
      		 
      SHOW CREATE TABLE t1;


      +-------+----------------------------------------------------------------------------------------------+
      		 
      | Table | Create Table                                                                                 |
      		 
      +-------+----------------------------------------------------------------------------------------------+
      		 
      | t1    | CREATE TABLE `t1` (
      		 
        `1` int(1) NOT NULL DEFAULT '0'
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
      		 
      +-------+----------------------------------------------------------------------------------------------+


      CREATE OR REPLACE TABLE t1 AS SELECT 1 UNION SELECT 1;
      		 
      SHOW CREATE TABLE t1;


      +-------+--------------------------------------------------------------------------------------------------+
      		 
      | Table | Create Table                                                                                     |
      		 
      +-------+--------------------------------------------------------------------------------------------------+
      		 
      | t1    | CREATE TABLE `t1` (
      		 
        `1` bigint(20) NOT NULL DEFAULT '0'
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
      		 
      +-------+--------------------------------------------------------------------------------------------------+

      Notice:

      • The first CREATE statement made a column of the int(1) type.
      • The second CREATE statement with UNION made a column the bigint(20) type. Looks excessive. An int column would be enough.

      Attachments

        Issue Links

          blocks

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. MDEV-4912 Data type plugin API version 1

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-16347 Integer literal is typed as MYSQL_TYPE_LONG

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-12613 UNION creates excessive integer column types for functions

          • Major - Major loss of function.
          • Open

          Activity

            bar Alexander Barkov added a comment -

            Pushed to bb-10.2-ext

            bar Alexander Barkov added a comment - Pushed to bb-10.2-ext

            People

              bar Alexander Barkov
              bar Alexander Barkov
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              Dates

                Created:
                Updated:
                Resolved:

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