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  1. MariaDB ColumnStore
  2. MCOL-4613

Garbage result of a union between huge narrow DECIMAL and BIGINT

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    • Sprint:
      2021-7

      Description

      This ticket is for 5.6.1 only. Testing in 6.1.1 will need to wait until MCOL-4612 is MERGED into develop branch

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a DECIMAL(17,1), b BIGINT) ENGINE=ColumnStore;
      INSERT INTO t1 VALUES (9999999999999999.9, 999999999999999999);
      SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tu;
      

      +-----------------------+
      | a                     |
      +-----------------------+
      |    9999999999999999.9 |
      | -844674407370955162.6 |
      +-----------------------+
      

      Looks wrong.

      Note, the problem cannot be repeated in 6.x because of MCOL-4612
      But perhaps it still exists. MCOL-4612 needs to be fixed first to verify it further in 6.x.

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              Assignee:
              dleeyh Daniel Lee
              Reporter:
              bar Alexander Barkov
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                Updated:
                Resolved:

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