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  1. MariaDB Server
  2. MDEV-6852

Sequence of decimal division and multiplications returns 0 instead of the real result

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Details

    • Bug
    • Status: Open (View Workflow)
    • Minor
    • Resolution: Unresolved
    • 5.5.40
    • 5.5
    • None
    • None

    Description

      MariaDB [test]> SELECT 621215273600417790 / 6 * 10000000000000000000.0 * 0.0000000001;
      		 
      +----------------------------------------------------------------+
      		 
      | 621215273600417790 / 6 * 10000000000000000000.0 * 0.0000000001 |
      		 
      +----------------------------------------------------------------+
      		 
      |                                              0.000000000000000 |
      		 
      +----------------------------------------------------------------+
      		 
      1 row in set (0.00 sec)

      MySQL also returns 0.
      PostgreSQL produces the result:

      SELECT 621215273600417790 / 6 * 10000000000000000000.0 * 0.0000000001;
      		 
                      ?column?                 
      -----------------------------------------
      		 
       103535878933402965000000000.00000000000

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        Issue Links

          relates to

          Task - A task that needs to be done. MDEV-6841 test decimal math

          • Major - Major loss of function.
          • Open

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              serg Sergei Golubchik
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:

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