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  1. MariaDB ColumnStore
  2. MCOL-4619

TreeNode::getUintVal() does not round: Implicit DECIMAL->UINT conversion is not like in InnoDB

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 5.6.1, 6.1.1
    • 6.1.1
    • PrimProc
    • None

    Description

      DROP TABLE IF EXISTS t1;
      		 
      CREATE TABLE t1 (a VARCHAR(32), d DECIMAL(10,1)) ENGINE=ColumnStore;
      		 
      INSERT INTO t1 VALUES ('aaaa', 1.5);
      		 
      SELECT LEFT(a, d) FROM t1;


      +------------+
      		 
      | LEFT(a, d) |
      		 
      +------------+
      		 
      | a          |
      		 
      +------------+

      Notice, 1.5 was truncated to 1.

      Looks wrong. The expected result is to round:

      DROP TABLE IF EXISTS t1;
      		 
      CREATE TABLE t1 (a VARCHAR(32), d DECIMAL(10,1)) ENGINE=InnoDB;
      		 
      INSERT INTO t1 VALUES ('aaaa', 1.5);
      		 
      SELECT LEFT(a, d) FROM t1;


      +------------+
      		 
      | LEFT(a, d) |
      		 
      +------------+
      		 
      | aa         |
      		 
      +------------+

      Notice, 1.5 was rounded to 2.

      Attachments

        Issue Links

          blocks

          Task - A task that needs to be done. MCOL-4361 Replace pow(10.0, (double)scale) expressions with a static dictionary lookup.

          • 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. MCOL-4627 SET int_col=decimal_col returns an error

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4622 Implicit FLOAT->INT and DOUBLE->INT conversion is not like in InnoDB

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4650 TreeNode::getIntVal() looses precision for narrow decimal

          • 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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