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  1. MariaDB Server
  2. MDEV-12856

Wrong result set metadata for DIV

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Details

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

    Description

      SELECT 2 DIV 1;


      Field   1:  `2 DIV 1`
      		 
      Type:       LONGLONG
      		 
      Collation:  binary (63)
      		 
      Length:     1
      		 
      Max_length: 1
      		 
      Decimals:   0
      		 
      Flags:      BINARY NUM


      CREATE OR REPLACE TABLE t1 AS SELECT 2 DIV 1 AS c;
      		 
      DESCRIBE t1;


      +-------+--------+------+-----+---------+-------+
      		 
      | Field | Type   | Null | Key | Default | Extra |
      		 
      +-------+--------+------+-----+---------+-------+
      		 
      | c     | int(1) | YES  |     | NULL    |       |
      		 
      +-------+--------+------+-----+---------+-------+

      Notice, result set metadata for SELECT 2 DIV 1 reports the data type as LONGLONG. This looks wrong.
      A CREATE..SELECT query for the same expression correctly makes an INT column.
      Result set metadata should be fixed to report LONG for all DIV expressions creating an INT column. LONGLONG should be reported only for DIV making a BIGINT column in CREATE..SELECT.

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        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-12854 Synchronize CREATE..SELECT data type and result set metadata data type for INT functions

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-12857 Out-of-range errors on CREATE..SELECT 2222222222 DIV 1

          • Major - Major loss of function.
          • Closed

          Activity

            People

              bar Alexander Barkov
              bar Alexander Barkov
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              Dates

                Created:
                Updated:
                Resolved:

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