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  1. MariaDB Server
  2. MDEV-5882

Bad result for COALESCE(huge_unsigned_number, 1)

        Details

        • Type: Bug
        • Status: Open
        • Priority: Minor
        • Resolution: Unresolved
        • Affects Version/s: 5.5.36, 10.0.9
        • Fix Version/s: 10.0, 5.5
        • Component/s: None
        • Labels:
          None

          Description

          Run this SQL script:

          SELECT COALESCE(9223372036854775808, 1);
SHOW WARNINGS;

          The results are:

          +----------------------------------+
| COALESCE(9223372036854775808, 1) |
+----------------------------------+
|              9223372036854775807 |
+----------------------------------+
1 row in set, 1 warning (0.00 sec)

+---------+------+-----------------------------------------------------------------------------+
| Level   | Code | Message                                                                     |
+---------+------+-----------------------------------------------------------------------------+
| Warning | 1916 | Got overflow when converting '9223372036854775808' to INT. Value truncated. |
+---------+------+-----------------------------------------------------------------------------+
1 row in set (0.00 set

          This is wrong. The expected result is 9223372036854775808 with no warnings.

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                  • Assignee:
                    bar Alexander Barkov
                    Reporter:
                    bar Alexander Barkov
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                    Dates

                    • Created:
                      Updated: