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  1. MariaDB Server
  2. MDEV-9336

ALTER from DOUBLE to TIME returns a wrong result

Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 5.5(EOL), 10.0(EOL), 10.1(EOL), 10.2(EOL), 10.3(EOL), 10.4(EOL)
    • 10.4(EOL)
    • Data types, Temporal Types
    • None

    Description

      This script:

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a TIME);
      INSERT INTO t1 VALUES (0.999e19);
      SELECT * FROM t1;

      correctly returns:

      +-----------+
      | a         |
      +-----------+
      | 838:59:59 |
      +-----------+

      This script:

      DROP TABLE IF EXISTS t1,t2;
      CREATE TABLE t1 (a TIME);
      CREATE TABLE t2 (a DOUBLE);
      INSERT INTO t2 VALUES (0.999e19);
      INSERT INTO t1 SELECT a FROM t2;
      SELECT * FROM t1;

      also correctly returns:

      +-----------+
      | a         |
      +-----------+
      | 838:59:59 |
      +-----------+

      This script:

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a DOUBLE);
      INSERT INTO t1 VALUES (0.999e19);
      ALTER TABLE t1 MODIFY a TIME;
      SELECT * FROM t1;

      erroneously returns

      +----------+
      | a        |
      +----------+
      | 00:00:00 |
      +----------+

      The expected result is 838:59:59, like in the previous two scripts.

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        Issue Links

          Activity

            bar Alexander Barkov created issue -
            bar Alexander Barkov made changes -
            Field Original Value New Value
            bar Alexander Barkov made changes -
            Component/s Temporal Types [ 11000 ]
            bar Alexander Barkov made changes -
            Affects Version/s 10.3 [ 22126 ]
            Affects Version/s 10.4 [ 22408 ]
            bar Alexander Barkov made changes -
            Fix Version/s 10.4 [ 22408 ]
            Fix Version/s 10.2 [ 14601 ]
            bar Alexander Barkov made changes -
            Component/s Data types [ 13906 ]
            julien.fritsch Julien Fritsch made changes -
            Epic Link MDEV-21071 [ 80504 ]
            julien.fritsch Julien Fritsch made changes -
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 73334 ] MariaDB v4 [ 139923 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            HazemRawi Hazem Alrawi added a comment -

            Hi,
            I will be working on this bug, can you update the fix versions?

            HazemRawi Hazem Alrawi added a comment - Hi, I will be working on this bug, can you update the fix versions?

            People

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

              Dates

                Created:
                Updated:

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