Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-12497

Wrong data type for LEAST(latin1_expr, utf8_expr)

Details

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

    Description

      CREATE OR REPLACE TABLE t1 AS SELECT
      		 
        LEAST(_latin1'aaa',_utf8 0xC39F) AS c1,
      		 
        COALESCE(_latin1'aaa',_utf8 0xC39F) AS c2;
      		 
      SHOW WARNINGS;
      		 
      SHOW CREATE TABLE t1;
      		 
      SELECT * FROM t1;

      returns a warning:

      +---------+------+-----------------------------------------+
      		 
      | Level   | Code | Message                                 |
      		 
      +---------+------+-----------------------------------------+
      		 
      | Warning | 1265 | Data truncated for column 'c1' at row 1 |
      		 
      +---------+------+-----------------------------------------+

      and this result:

      +-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      | Table | Create Table                                                                                                                                                                  |
      		 
      +-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      | t1    | CREATE TABLE `t1` (
      		 
        `c1` varchar(1) CHARACTER SET utf8 NOT NULL DEFAULT '',
      		 
        `c2` varchar(3) CHARACTER SET utf8 NOT NULL DEFAULT ''
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
      		 
      +-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      +----+-----+
      		 
      | c1 | c2  |
      		 
      +----+-----+
      		 
      | a  | aaa |
      		 
      +----+-----+

      Notice:

      • The data type for column c1 is wrong. It should be varchar(3)), similar to c2
      • The result for column c1 is wrong. It should be aaa.

      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
          relates to

          Task - A task that needs to be done. MDEV-12506 Split Item_func_min_max::fix_length_and_dec() into methods in Type_handler

          • Major - Major loss of function.
          • Closed

          Activity

            People

              bar Alexander Barkov
              bar Alexander Barkov
              Votes:
              0 Vote for this issue
              Watchers:
              1 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.