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  1. MariaDB Server
  2. MDEV-15926

MEDIUMINT returns wrong I_S attributes

Details

    Description

      The MEDIUMINT type has the following characteristics depending on signess:

      MEDIUMINT SIGNED    -8388608..8388607   (7 digits,  8 characters)
      		 
      MEDIUNINT UNSIGNED        0..16777215   (8 digits,  8 characters)

      But these characteristics are not taken into account precisely:

      CREATE OR REPLACE TABLE t1 (a MEDIUMINT, b MEDIUMINT UNSIGNED);
      		 
      SELECT COLUMN_NAME, NUMERIC_PRECISION FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1';


      +-------------+-------------------+
      		 
      | COLUMN_NAME | NUMERIC_PRECISION |
      		 
      +-------------+-------------------+
      		 
      | a           |                 7 |
      		 
      | b           |                 7 |
      		 
      +-------------+-------------------+

      Notice, the precision value for UNSIGNED is wrong. It should be 8 digits.

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          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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13232 Assertion `(&(&share->intern_lock)->m_mutex)->count > 0 && pthread_equal(pthread_self(), (&(&share->intern_lock)->m_mutex)->thread)' failed in _ma_state_info_write

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15946 MEDIUMINT(N<8) creates a wrong data type on conversion to string

          • Major - Major loss of function.
          • Closed

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              bar Alexander Barkov
              bar Alexander Barkov
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                Created:
                Updated:
                Resolved:

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